diff --git a/src/core/libraries/audio3d/audio3d.cpp b/src/core/libraries/audio3d/audio3d.cpp
index 646c28949..2a2552e0d 100644
--- a/src/core/libraries/audio3d/audio3d.cpp
+++ b/src/core/libraries/audio3d/audio3d.cpp
@@ -29,8 +29,8 @@ s32 PS4_SYSV_ABI sceAudio3dAudioOutClose(const s32 handle) {
     return AudioOut::sceAudioOutClose(handle);
 }
 
-s32 PS4_SYSV_ABI
-sceAudio3dAudioOutOpen(const OrbisAudio3dPortId port_id, const OrbisUserServiceUserId user_id,
+s32 PS4_SYSV_ABI sceAudio3dAudioOutOpen(
+    const OrbisAudio3dPortId port_id, const Libraries::UserService::OrbisUserServiceUserId user_id,
                        s32 type, const s32 index, const u32 len, const u32 freq,
                        const AudioOut::OrbisAudioOutParamExtendedInformation param) {
     LOG_INFO(Lib_Audio3d,
@@ -421,7 +421,7 @@ s32 PS4_SYSV_ABI sceAudio3dPortGetStatus() {
     return ORBIS_OK;
 }
 
-s32 PS4_SYSV_ABI sceAudio3dPortOpen(const OrbisUserServiceUserId user_id,
+s32 PS4_SYSV_ABI sceAudio3dPortOpen(const Libraries::UserService::OrbisUserServiceUserId user_id,
                                     const OrbisAudio3dOpenParameters* parameters,
                                     OrbisAudio3dPortId* port_id) {
     LOG_INFO(Lib_Audio3d, "called, user_id = {}, parameters = {}, id = {}", user_id,
diff --git a/src/core/libraries/audio3d/audio3d.h b/src/core/libraries/audio3d/audio3d.h
index f4e9ada8a..23d22298e 100644
--- a/src/core/libraries/audio3d/audio3d.h
+++ b/src/core/libraries/audio3d/audio3d.h
@@ -15,8 +15,6 @@ class SymbolsResolver;
 
 namespace Libraries::Audio3d {
 
-using OrbisUserServiceUserId = s32;
-
 enum class OrbisAudio3dRate : u32 {
     ORBIS_AUDIO3D_RATE_48000 = 0,
 };
@@ -91,7 +89,8 @@ struct Audio3dState {
 };
 
 s32 PS4_SYSV_ABI sceAudio3dAudioOutClose(s32 handle);
-s32 PS4_SYSV_ABI sceAudio3dAudioOutOpen(OrbisAudio3dPortId port_id, OrbisUserServiceUserId user_id,
+s32 PS4_SYSV_ABI sceAudio3dAudioOutOpen(OrbisAudio3dPortId port_id,
+                                        Libraries::UserService::OrbisUserServiceUserId user_id,
                                         s32 type, s32 index, u32 len, u32 freq,
                                         AudioOut::OrbisAudioOutParamExtendedInformation param);
 s32 PS4_SYSV_ABI sceAudio3dAudioOutOutput(s32 handle, void* ptr);
@@ -127,7 +126,7 @@ s32 PS4_SYSV_ABI sceAudio3dPortGetQueueLevel(OrbisAudio3dPortId port_id, u32* qu
                                              u32* queue_available);
 s32 PS4_SYSV_ABI sceAudio3dPortGetState();
 s32 PS4_SYSV_ABI sceAudio3dPortGetStatus();
-s32 PS4_SYSV_ABI sceAudio3dPortOpen(OrbisUserServiceUserId user_id,
+s32 PS4_SYSV_ABI sceAudio3dPortOpen(Libraries::UserService::OrbisUserServiceUserId user_id,
                                     const OrbisAudio3dOpenParameters* parameters,
                                     OrbisAudio3dPortId* port_id);
 s32 PS4_SYSV_ABI sceAudio3dPortPush(OrbisAudio3dPortId port_id, OrbisAudio3dBlocking blocking);
diff --git a/src/core/libraries/game_live_streaming/gamelivestreaming.h b/src/core/libraries/game_live_streaming/gamelivestreaming.h
index 468750fd1..08f26e554 100644
--- a/src/core/libraries/game_live_streaming/gamelivestreaming.h
+++ b/src/core/libraries/game_live_streaming/gamelivestreaming.h
@@ -3,6 +3,7 @@
 
 #pragma once
 
+#include <core/libraries/system/userservice.h>
 #include "common/types.h"
 
 namespace Core::Loader {
@@ -15,11 +16,11 @@ struct OrbisGameLiveStreamingStatus {
     bool isOnAir;
     u8 align[3];
     u32 spectatorCounts;
-    s32 userId;
+    Libraries::UserService::OrbisUserServiceUserId userId;
     u8 reserved[60];
 };
 struct OrbisGameLiveStreamingStatus2 {
-    s32 userId;
+    Libraries::UserService::OrbisUserServiceUserId userId;
     bool isOnAir;
     u8 align[3];
     u32 spectatorCounts;
diff --git a/src/core/libraries/ime/error_dialog.cpp b/src/core/libraries/ime/error_dialog.cpp
index 07580fe1d..913b4bfe8 100644
--- a/src/core/libraries/ime/error_dialog.cpp
+++ b/src/core/libraries/ime/error_dialog.cpp
@@ -13,6 +13,7 @@
 #include "error_dialog.h"
 #include "imgui/imgui_layer.h"
 #include "imgui/imgui_std.h"
+#include <core/libraries/system/userservice.h>
 
 static constexpr ImVec2 BUTTON_SIZE{100.0f, 30.0f};
 
@@ -117,7 +118,7 @@ static ErrorDialogUi g_dialog_ui;
 struct Param {
     s32 size;
     s32 errorCode;
-    OrbisUserServiceUserId userId;
+    Libraries::UserService::OrbisUserServiceUserId userId;
     s32 _reserved;
 };
 
diff --git a/src/core/libraries/ime/error_dialog.h b/src/core/libraries/ime/error_dialog.h
index 3e6651d4a..42b37da66 100644
--- a/src/core/libraries/ime/error_dialog.h
+++ b/src/core/libraries/ime/error_dialog.h
@@ -11,8 +11,6 @@ class SymbolsResolver;
 }
 namespace Libraries::ErrorDialog {
 
-using OrbisUserServiceUserId = s32;
-
 struct Param;
 
 CommonDialog::Error PS4_SYSV_ABI sceErrorDialogClose();
diff --git a/src/core/libraries/ime/ime.cpp b/src/core/libraries/ime/ime.cpp
index 1c61bc276..c14122bb0 100644
--- a/src/core/libraries/ime/ime.cpp
+++ b/src/core/libraries/ime/ime.cpp
@@ -247,7 +247,7 @@ s32 PS4_SYSV_ABI sceImeGetPanelSize(const OrbisImeParam* param, u32* width, u32*
     return ORBIS_OK;
 }
 
-s32 PS4_SYSV_ABI sceImeKeyboardClose(s32 userId) {
+s32 PS4_SYSV_ABI sceImeKeyboardClose(Libraries::UserService::OrbisUserServiceUserId userId) {
     LOG_INFO(Lib_Ime, "(STUBBED) called");
 
     if (!g_keyboard_handler) {
@@ -268,7 +268,8 @@ int PS4_SYSV_ABI sceImeKeyboardGetResourceId() {
     return ORBIS_OK;
 }
 
-s32 PS4_SYSV_ABI sceImeKeyboardOpen(s32 userId, const OrbisImeKeyboardParam* param) {
+s32 PS4_SYSV_ABI sceImeKeyboardOpen(Libraries::UserService::OrbisUserServiceUserId userId,
+                                    const OrbisImeKeyboardParam* param) {
     LOG_INFO(Lib_Ime, "called");
 
     if (!param) {
diff --git a/src/core/libraries/ime/ime.h b/src/core/libraries/ime/ime.h
index fcf381048..4a8c39c98 100644
--- a/src/core/libraries/ime/ime.h
+++ b/src/core/libraries/ime/ime.h
@@ -99,10 +99,11 @@ int PS4_SYSV_ABI sceImeFilterText();
 int PS4_SYSV_ABI sceImeForTestFunction();
 int PS4_SYSV_ABI sceImeGetPanelPositionAndForm();
 s32 PS4_SYSV_ABI sceImeGetPanelSize(const OrbisImeParam* param, u32* width, u32* height);
-s32 PS4_SYSV_ABI sceImeKeyboardClose(s32 userId);
+s32 PS4_SYSV_ABI sceImeKeyboardClose(Libraries::UserService::OrbisUserServiceUserId userId);
 int PS4_SYSV_ABI sceImeKeyboardGetInfo();
 int PS4_SYSV_ABI sceImeKeyboardGetResourceId();
-s32 PS4_SYSV_ABI sceImeKeyboardOpen(s32 userId, const OrbisImeKeyboardParam* param);
+s32 PS4_SYSV_ABI sceImeKeyboardOpen(Libraries::UserService::OrbisUserServiceUserId userId,
+                                    const OrbisImeKeyboardParam* param);
 int PS4_SYSV_ABI sceImeKeyboardOpenInternal();
 int PS4_SYSV_ABI sceImeKeyboardSetMode();
 int PS4_SYSV_ABI sceImeKeyboardUpdate();
diff --git a/src/core/libraries/ime/ime_common.h b/src/core/libraries/ime/ime_common.h
index 96f073dc5..ee00ad8ae 100644
--- a/src/core/libraries/ime/ime_common.h
+++ b/src/core/libraries/ime/ime_common.h
@@ -5,6 +5,7 @@
 
 #include "common/types.h"
 #include "core/libraries/rtc/rtc.h"
+#include <core/libraries/system/userservice.h>
 
 enum class OrbisImeType : u32 {
     Default = 0,
@@ -141,7 +142,7 @@ struct OrbisImeKeycode {
 };
 
 struct OrbisImeKeyboardResourceIdArray {
-    s32 userId;
+    Libraries::UserService::OrbisUserServiceUserId userId;
     u32 resourceId[5];
 };
 
diff --git a/src/core/libraries/np_manager/np_manager.cpp b/src/core/libraries/np_manager/np_manager.cpp
index bc920b5a9..54a33fc52 100644
--- a/src/core/libraries/np_manager/np_manager.cpp
+++ b/src/core/libraries/np_manager/np_manager.cpp
@@ -924,7 +924,7 @@ int PS4_SYSV_ABI sceNpGetAccountCountry() {
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI sceNpGetAccountCountryA(OrbisUserServiceUserId user_id,
+int PS4_SYSV_ABI sceNpGetAccountCountryA(Libraries::UserService::OrbisUserServiceUserId user_id,
                                          OrbisNpCountryCode* country_code) {
     LOG_INFO(Lib_NpManager, "(STUBBED) called, user_id = {}", user_id);
     if (country_code == nullptr) {
@@ -955,7 +955,8 @@ int PS4_SYSV_ABI sceNpGetAccountId(OrbisNpOnlineId* online_id, u64* account_id)
     return SIGNEDIN_STATUS;
 }
 
-int PS4_SYSV_ABI sceNpGetAccountIdA(OrbisUserServiceUserId user_id, u64* account_id) {
+int PS4_SYSV_ABI sceNpGetAccountIdA(Libraries::UserService::OrbisUserServiceUserId user_id,
+                                    u64* account_id) {
     LOG_DEBUG(Lib_NpManager, "user_id {}", user_id);
     if (account_id == nullptr) {
         return ORBIS_NP_ERROR_INVALID_ARGUMENT;
@@ -989,7 +990,8 @@ int PS4_SYSV_ABI sceNpGetGamePresenceStatusA() {
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI sceNpGetNpId(OrbisUserServiceUserId user_id, OrbisNpId* np_id) {
+int PS4_SYSV_ABI sceNpGetNpId(Libraries::UserService::OrbisUserServiceUserId user_id,
+                              OrbisNpId* np_id) {
     LOG_DEBUG(Lib_NpManager, "user_id {}", user_id);
     if (np_id == nullptr) {
         return ORBIS_NP_ERROR_INVALID_ARGUMENT;
@@ -1004,7 +1006,8 @@ int PS4_SYSV_ABI sceNpGetNpReachabilityState() {
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI sceNpGetOnlineId(OrbisUserServiceUserId user_id, OrbisNpOnlineId* online_id) {
+int PS4_SYSV_ABI sceNpGetOnlineId(Libraries::UserService::OrbisUserServiceUserId user_id,
+                                  OrbisNpOnlineId* online_id) {
     LOG_DEBUG(Lib_NpManager, "user_id {}", user_id);
     if (online_id == nullptr) {
         return ORBIS_NP_ERROR_INVALID_ARGUMENT;
@@ -1024,7 +1027,8 @@ int PS4_SYSV_ABI sceNpGetParentalControlInfoA() {
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI sceNpGetState(OrbisUserServiceUserId user_id, OrbisNpState* state) {
+int PS4_SYSV_ABI sceNpGetState(Libraries::UserService::OrbisUserServiceUserId user_id,
+                               OrbisNpState* state) {
     if (state == nullptr) {
         return ORBIS_NP_ERROR_INVALID_ARGUMENT;
     }
@@ -1043,7 +1047,8 @@ int PS4_SYSV_ABI sceNpGetUserIdByOnlineId() {
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI sceNpHasSignedUp(OrbisUserServiceUserId user_id, bool* has_signed_up) {
+int PS4_SYSV_ABI sceNpHasSignedUp(Libraries::UserService::OrbisUserServiceUserId user_id,
+                                  bool* has_signed_up) {
     LOG_DEBUG(Lib_NpManager, "called");
     if (has_signed_up == nullptr) {
         return ORBIS_NP_ERROR_INVALID_ARGUMENT;
diff --git a/src/core/libraries/np_manager/np_manager.h b/src/core/libraries/np_manager/np_manager.h
index 1078a9f3e..705c91e79 100644
--- a/src/core/libraries/np_manager/np_manager.h
+++ b/src/core/libraries/np_manager/np_manager.h
@@ -4,6 +4,7 @@
 #pragma once
 
 #include "common/types.h"
+#include <core/libraries/system/userservice.h>
 
 namespace Core::Loader {
 class SymbolsResolver;
@@ -18,8 +19,6 @@ using OrbisNpStateCallbackForNpToolkit = PS4_SYSV_ABI void (*)(s32 userId, Orbis
 
 constexpr int ORBIS_NP_ONLINEID_MAX_LENGTH = 16;
 
-using OrbisUserServiceUserId = s32;
-
 struct OrbisNpOnlineId {
     char data[ORBIS_NP_ONLINEID_MAX_LENGTH];
     char term;
@@ -221,26 +220,31 @@ int PS4_SYSV_ABI sceNpCreateRequest();
 int PS4_SYSV_ABI sceNpDeleteRequest(int reqId);
 int PS4_SYSV_ABI sceNpGetAccountAge();
 int PS4_SYSV_ABI sceNpGetAccountCountry();
-int PS4_SYSV_ABI sceNpGetAccountCountryA(OrbisUserServiceUserId user_id,
+int PS4_SYSV_ABI sceNpGetAccountCountryA(Libraries::UserService::OrbisUserServiceUserId user_id,
                                          OrbisNpCountryCode* country_code);
 int PS4_SYSV_ABI sceNpGetAccountDateOfBirth();
 int PS4_SYSV_ABI sceNpGetAccountDateOfBirthA();
 int PS4_SYSV_ABI sceNpGetAccountId(OrbisNpOnlineId* online_id, u64* account_id);
-int PS4_SYSV_ABI sceNpGetAccountIdA(OrbisUserServiceUserId user_id, u64* account_id);
+int PS4_SYSV_ABI sceNpGetAccountIdA(Libraries::UserService::OrbisUserServiceUserId user_id,
+                                    u64* account_id);
 int PS4_SYSV_ABI sceNpGetAccountLanguage();
 int PS4_SYSV_ABI sceNpGetAccountLanguage2();
 int PS4_SYSV_ABI sceNpGetAccountLanguageA();
 int PS4_SYSV_ABI sceNpGetGamePresenceStatus();
 int PS4_SYSV_ABI sceNpGetGamePresenceStatusA();
-int PS4_SYSV_ABI sceNpGetNpId(OrbisUserServiceUserId user_id, OrbisNpId* np_id);
+int PS4_SYSV_ABI sceNpGetNpId(Libraries::UserService::OrbisUserServiceUserId user_id,
+                              OrbisNpId* np_id);
 int PS4_SYSV_ABI sceNpGetNpReachabilityState();
-int PS4_SYSV_ABI sceNpGetOnlineId(OrbisUserServiceUserId user_id, OrbisNpOnlineId* online_id);
+int PS4_SYSV_ABI sceNpGetOnlineId(Libraries::UserService::OrbisUserServiceUserId user_id,
+                                  OrbisNpOnlineId* online_id);
 int PS4_SYSV_ABI sceNpGetParentalControlInfo();
 int PS4_SYSV_ABI sceNpGetParentalControlInfoA();
-int PS4_SYSV_ABI sceNpGetState(OrbisUserServiceUserId user_id, OrbisNpState* state);
+int PS4_SYSV_ABI sceNpGetState(Libraries::UserService::OrbisUserServiceUserId user_id,
+                               OrbisNpState* state);
 int PS4_SYSV_ABI sceNpGetUserIdByAccountId();
 int PS4_SYSV_ABI sceNpGetUserIdByOnlineId();
-int PS4_SYSV_ABI sceNpHasSignedUp(OrbisUserServiceUserId user_id, bool* has_signed_up);
+int PS4_SYSV_ABI sceNpHasSignedUp(Libraries::UserService::OrbisUserServiceUserId user_id,
+                                  bool* has_signed_up);
 int PS4_SYSV_ABI sceNpIdMapperAbortRequest();
 int PS4_SYSV_ABI sceNpIdMapperAccountIdToNpId();
 int PS4_SYSV_ABI sceNpIdMapperAccountIdToOnlineId();
diff --git a/src/core/libraries/np_trophy/np_trophy.cpp b/src/core/libraries/np_trophy/np_trophy.cpp
index e3c5ce35e..a82e62eac 100644
--- a/src/core/libraries/np_trophy/np_trophy.cpp
+++ b/src/core/libraries/np_trophy/np_trophy.cpp
@@ -4,6 +4,7 @@
 #include <unordered_map>
 #include <pugixml.hpp>
 
+#include <core/libraries/system/userservice.h>
 #include "common/logging/log.h"
 #include "common/path_util.h"
 #include "common/slot_vector.h"
@@ -147,7 +148,8 @@ int PS4_SYSV_ABI sceNpTrophyConfigHasGroupFeature() {
     return ORBIS_OK;
 }
 
-s32 PS4_SYSV_ABI sceNpTrophyCreateContext(OrbisNpTrophyContext* context, int32_t user_id,
+s32 PS4_SYSV_ABI sceNpTrophyCreateContext(OrbisNpTrophyContext* context,
+                                          Libraries::UserService::OrbisUserServiceUserId userId,
                                           uint32_t service_label, uint64_t options) {
     ASSERT(options == 0ull);
     if (!context) {
@@ -158,16 +160,16 @@ s32 PS4_SYSV_ABI sceNpTrophyCreateContext(OrbisNpTrophyContext* context, int32_t
         return ORBIS_NP_TROPHY_ERROR_CONTEXT_EXCEEDS_MAX;
     }
 
-    const auto& key = ContextKey{user_id, service_label};
+    const auto& key = ContextKey{userId, service_label};
     if (contexts_internal.contains(key)) {
         return ORBIS_NP_TROPHY_ERROR_CONTEXT_ALREADY_EXISTS;
     }
 
-    const auto ctx_id = trophy_contexts.insert(user_id, service_label);
+    const auto ctx_id = trophy_contexts.insert(userId, service_label);
 
     *context = ctx_id.index + 1;
     contexts_internal[key].context_id = *context;
-    LOG_INFO(Lib_NpTrophy, "New context = {}, user_id = {} service label = {}", *context, user_id,
+    LOG_INFO(Lib_NpTrophy, "New context = {}, user_id = {} service label = {}", *context, userId,
              service_label);
 
     return ORBIS_OK;
diff --git a/src/core/libraries/pad/pad.cpp b/src/core/libraries/pad/pad.cpp
index 42582783b..c616b7d27 100644
--- a/src/core/libraries/pad/pad.cpp
+++ b/src/core/libraries/pad/pad.cpp
@@ -1,6 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+#include <core/libraries/system/userservice.h>
 #include "common/config.h"
 #include "common/logging/log.h"
 #include "common/singleton.h"
@@ -156,7 +157,8 @@ int PS4_SYSV_ABI scePadGetFeatureReport() {
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI scePadGetHandle(s32 userId, s32 type, s32 index) {
+int PS4_SYSV_ABI scePadGetHandle(Libraries::UserService::OrbisUserServiceUserId userId, s32 type,
+                                 s32 index) {
     if (userId == -1) {
         return ORBIS_PAD_ERROR_DEVICE_NO_HANDLE;
     }
@@ -249,7 +251,8 @@ int PS4_SYSV_ABI scePadMbusTerm() {
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI scePadOpen(s32 userId, s32 type, s32 index, const OrbisPadOpenParam* pParam) {
+int PS4_SYSV_ABI scePadOpen(Libraries::UserService::OrbisUserServiceUserId userId, s32 type,
+                            s32 index, const OrbisPadOpenParam* pParam) {
     if (userId == -1) {
         return ORBIS_PAD_ERROR_DEVICE_NO_HANDLE;
     }
@@ -265,8 +268,8 @@ int PS4_SYSV_ABI scePadOpen(s32 userId, s32 type, s32 index, const OrbisPadOpenP
     return 1; // dummy
 }
 
-int PS4_SYSV_ABI scePadOpenExt(s32 userId, s32 type, s32 index,
-                               const OrbisPadOpenExtParam* pParam) {
+int PS4_SYSV_ABI scePadOpenExt(Libraries::UserService::OrbisUserServiceUserId userId, s32 type,
+                               s32 index, const OrbisPadOpenExtParam* pParam) {
     LOG_ERROR(Lib_Pad, "(STUBBED) called");
     if (Config::getUseSpecialPad()) {
         if (type != ORBIS_PAD_PORT_TYPE_SPECIAL)
diff --git a/src/core/libraries/pad/pad.h b/src/core/libraries/pad/pad.h
index 68943b460..c24a78b93 100644
--- a/src/core/libraries/pad/pad.h
+++ b/src/core/libraries/pad/pad.h
@@ -3,6 +3,7 @@
 
 #pragma once
 
+#include <core/libraries/system/userservice.h>
 #include "common/enum.h"
 #include "common/types.h"
 
@@ -276,7 +277,8 @@ int PS4_SYSV_ABI scePadGetExtControllerInformation(s32 handle,
                                                    OrbisPadExtendedControllerInformation* pInfo);
 int PS4_SYSV_ABI scePadGetExtensionUnitInfo();
 int PS4_SYSV_ABI scePadGetFeatureReport();
-int PS4_SYSV_ABI scePadGetHandle(s32 userId, s32 type, s32 index);
+int PS4_SYSV_ABI scePadGetHandle(Libraries::UserService::OrbisUserServiceUserId userId, s32 type,
+                                 s32 index);
 int PS4_SYSV_ABI scePadGetIdleCount();
 int PS4_SYSV_ABI scePadGetInfo();
 int PS4_SYSV_ABI scePadGetInfoByPortType();
@@ -294,8 +296,10 @@ int PS4_SYSV_ABI scePadIsMoveReproductionModel();
 int PS4_SYSV_ABI scePadIsValidHandle();
 int PS4_SYSV_ABI scePadMbusInit();
 int PS4_SYSV_ABI scePadMbusTerm();
-int PS4_SYSV_ABI scePadOpen(s32 userId, s32 type, s32 index, const OrbisPadOpenParam* pParam);
-int PS4_SYSV_ABI scePadOpenExt(s32 userId, s32 type, s32 index, const OrbisPadOpenExtParam* pParam);
+int PS4_SYSV_ABI scePadOpen(Libraries::UserService::OrbisUserServiceUserId userId, s32 type,
+                            s32 index, const OrbisPadOpenParam* pParam);
+int PS4_SYSV_ABI scePadOpenExt(Libraries::UserService::OrbisUserServiceUserId userId, s32 type,
+                               s32 index, const OrbisPadOpenExtParam* pParam);
 int PS4_SYSV_ABI scePadOpenExt2();
 int PS4_SYSV_ABI scePadOutputReport();
 int PS4_SYSV_ABI scePadRead(s32 handle, OrbisPadData* pData, s32 num);
diff --git a/src/core/libraries/remote_play/remoteplay.cpp b/src/core/libraries/remote_play/remoteplay.cpp
index b7402173e..14ede107a 100644
--- a/src/core/libraries/remote_play/remoteplay.cpp
+++ b/src/core/libraries/remote_play/remoteplay.cpp
@@ -3,6 +3,7 @@
 
 #include "remoteplay.h"
 
+#include <core/libraries/system/userservice.h>
 #include "common/logging/log.h"
 #include "core/libraries/error_codes.h"
 #include "core/libraries/libs.h"
@@ -54,7 +55,8 @@ int PS4_SYSV_ABI sceRemoteplayGetConnectHistory() {
     return ORBIS_OK;
 }
 
-int PS4_SYSV_ABI sceRemoteplayGetConnectionStatus(s32 userId, int* pStatus) {
+int PS4_SYSV_ABI sceRemoteplayGetConnectionStatus(
+    Libraries::UserService::OrbisUserServiceUserId userId, int* pStatus) {
     *pStatus = ORBIS_REMOTEPLAY_CONNECTION_STATUS_DISCONNECT;
     return ORBIS_OK;
 }
diff --git a/src/core/libraries/remote_play/remoteplay.h b/src/core/libraries/remote_play/remoteplay.h
index 979f73a9e..159d6ab58 100644
--- a/src/core/libraries/remote_play/remoteplay.h
+++ b/src/core/libraries/remote_play/remoteplay.h
@@ -3,6 +3,7 @@
 
 #pragma once
 
+#include <core/libraries/system/userservice.h>
 #include "common/types.h"
 
 namespace Core::Loader {
@@ -24,7 +25,8 @@ int PS4_SYSV_ABI sceRemoteplayDisconnect();
 int PS4_SYSV_ABI sceRemoteplayGeneratePinCode();
 int PS4_SYSV_ABI sceRemoteplayGetApMode();
 int PS4_SYSV_ABI sceRemoteplayGetConnectHistory();
-int PS4_SYSV_ABI sceRemoteplayGetConnectionStatus(s32 userId, int* pStatus);
+int PS4_SYSV_ABI sceRemoteplayGetConnectionStatus(
+    Libraries::UserService::OrbisUserServiceUserId userId, int* pStatus);
 int PS4_SYSV_ABI sceRemoteplayGetConnectUserId();
 int PS4_SYSV_ABI sceRemoteplayGetMbusDeviceInfo();
 int PS4_SYSV_ABI sceRemoteplayGetOperationStatus();
diff --git a/src/core/libraries/share_play/shareplay.h b/src/core/libraries/share_play/shareplay.h
index 8b1ad5f47..d71cafb6d 100644
--- a/src/core/libraries/share_play/shareplay.h
+++ b/src/core/libraries/share_play/shareplay.h
@@ -21,8 +21,8 @@ struct OrbisSharePlayConnectionInfo {
     int mode;
     Libraries::NpManager::OrbisNpOnlineId hostOnlineId;
     Libraries::NpManager::OrbisNpOnlineId visitorOnlineId;
-    s32 hostUserId;
-    s32 visitorUserId;
+    Libraries::UserService::OrbisUserServiceUserId hostUserId;
+    Libraries::UserService::OrbisUserServiceUserId visitorUserId;
 };
 
 int PS4_SYSV_ABI sceSharePlayCrashDaemon();
diff --git a/src/core/libraries/system/userservice.cpp b/src/core/libraries/system/userservice.cpp
index b4bf189ea..631ac6234 100644
--- a/src/core/libraries/system/userservice.cpp
+++ b/src/core/libraries/system/userservice.cpp
@@ -490,7 +490,7 @@ int PS4_SYSV_ABI sceUserServiceGetImeRunCount() {
     return ORBIS_OK;
 }
 
-s32 PS4_SYSV_ABI sceUserServiceGetInitialUser(int* user_id) {
+s32 PS4_SYSV_ABI sceUserServiceGetInitialUser(OrbisUserServiceUserId* user_id) {
     LOG_DEBUG(Lib_UserService, "called");
     if (user_id == nullptr) {
         LOG_ERROR(Lib_UserService, "user_id is null");
@@ -1041,7 +1041,8 @@ int PS4_SYSV_ABI sceUserServiceGetTraditionalChineseInputType() {
     return ORBIS_OK;
 }
 
-s32 PS4_SYSV_ABI sceUserServiceGetUserColor(int user_id, OrbisUserServiceUserColor* color) {
+s32 PS4_SYSV_ABI sceUserServiceGetUserColor(OrbisUserServiceUserId user_id,
+                                            OrbisUserServiceUserColor* color) {
     // TODO fix me better
     LOG_DEBUG(Lib_UserService, "called user_id = {}", user_id);
     if (color == nullptr) {
@@ -1067,7 +1068,8 @@ int PS4_SYSV_ABI sceUserServiceGetUserGroupNum() {
     return ORBIS_OK;
 }
 
-s32 PS4_SYSV_ABI sceUserServiceGetUserName(int user_id, char* user_name, std::size_t size) {
+s32 PS4_SYSV_ABI sceUserServiceGetUserName(OrbisUserServiceUserId user_id, char* user_name,
+                                           std::size_t size) {
     LOG_DEBUG(Lib_UserService, "called user_id = {} ,size = {} ", user_id, size);
     if (user_name == nullptr) {
         LOG_ERROR(Lib_UserService, "user_name is null");
diff --git a/src/core/libraries/system/userservice.h b/src/core/libraries/system/userservice.h
index 66ac2b69d..35038b840 100644
--- a/src/core/libraries/system/userservice.h
+++ b/src/core/libraries/system/userservice.h
@@ -151,7 +151,7 @@ int PS4_SYSV_ABI sceUserServiceGetImeLastUnit();
 int PS4_SYSV_ABI sceUserServiceGetImePointerMode();
 int PS4_SYSV_ABI sceUserServiceGetImePredictiveTextEnabled();
 int PS4_SYSV_ABI sceUserServiceGetImeRunCount();
-s32 PS4_SYSV_ABI sceUserServiceGetInitialUser(int* user_id);
+s32 PS4_SYSV_ABI sceUserServiceGetInitialUser(OrbisUserServiceUserId* user_id);
 int PS4_SYSV_ABI sceUserServiceGetIPDLeft();
 int PS4_SYSV_ABI sceUserServiceGetIPDRight();
 int PS4_SYSV_ABI sceUserServiceGetIsFakePlus();
@@ -258,11 +258,13 @@ int PS4_SYSV_ABI sceUserServiceGetTopMenuLimitItem();
 int PS4_SYSV_ABI sceUserServiceGetTopMenuNotificationFlag();
 int PS4_SYSV_ABI sceUserServiceGetTopMenuTutorialFlag();
 int PS4_SYSV_ABI sceUserServiceGetTraditionalChineseInputType();
-s32 PS4_SYSV_ABI sceUserServiceGetUserColor(int user_id, OrbisUserServiceUserColor* color);
+s32 PS4_SYSV_ABI sceUserServiceGetUserColor(OrbisUserServiceUserId user_id,
+                                            OrbisUserServiceUserColor* color);
 int PS4_SYSV_ABI sceUserServiceGetUserGroupName();
 int PS4_SYSV_ABI sceUserServiceGetUserGroupNameList();
 int PS4_SYSV_ABI sceUserServiceGetUserGroupNum();
-s32 PS4_SYSV_ABI sceUserServiceGetUserName(int user_id, char* user_name, std::size_t size);
+s32 PS4_SYSV_ABI sceUserServiceGetUserName(OrbisUserServiceUserId user_id, char* user_name,
+                                           std::size_t size);
 int PS4_SYSV_ABI sceUserServiceGetUserStatus();
 int PS4_SYSV_ABI sceUserServiceGetVibrationEnabled();
 int PS4_SYSV_ABI sceUserServiceGetVoiceRecognitionLastUsedOsk();
diff --git a/src/core/libraries/videoout/video_out.cpp b/src/core/libraries/videoout/video_out.cpp
index da715b3bf..404fff316 100644
--- a/src/core/libraries/videoout/video_out.cpp
+++ b/src/core/libraries/videoout/video_out.cpp
@@ -291,7 +291,8 @@ s32 PS4_SYSV_ABI sceVideoOutGetResolutionStatus(s32 handle, SceVideoOutResolutio
     return ORBIS_OK;
 }
 
-s32 PS4_SYSV_ABI sceVideoOutOpen(SceUserServiceUserId userId, s32 busType, s32 index,
+s32 PS4_SYSV_ABI sceVideoOutOpen(Libraries::UserService::OrbisUserServiceUserId userId, s32 busType,
+                                 s32 index,
                                  const void* param) {
     LOG_INFO(Lib_VideoOut, "called");
     ASSERT(busType == SCE_VIDEO_OUT_BUS_TYPE_MAIN);
diff --git a/src/core/libraries/videoout/video_out.h b/src/core/libraries/videoout/video_out.h
index 7db09530b..575c52d74 100644
--- a/src/core/libraries/videoout/video_out.h
+++ b/src/core/libraries/videoout/video_out.h
@@ -3,6 +3,7 @@
 
 #pragma once
 
+#include <core/libraries/system/userservice.h>
 #include "core/libraries/kernel/equeue.h"
 #include "core/libraries/videoout/buffer.h"
 
@@ -12,8 +13,6 @@ class SymbolsResolver;
 
 namespace Libraries::VideoOut {
 
-using SceUserServiceUserId = s32; // TODO move it to proper place
-
 // SceVideoOutBusType
 constexpr int SCE_VIDEO_OUT_BUS_TYPE_MAIN = 0;                    // Main output
 constexpr int SCE_VIDEO_OUT_BUS_TYPE_AUX_SOCIAL_SCREEN = 5;       // Aux output for social
@@ -131,8 +130,8 @@ s32 PS4_SYSV_ABI sceVideoOutWaitVblank(s32 handle);
 s32 PS4_SYSV_ABI sceVideoOutSubmitFlip(s32 handle, s32 bufferIndex, s32 flipMode, s64 flipArg);
 s32 PS4_SYSV_ABI sceVideoOutGetFlipStatus(s32 handle, FlipStatus* status);
 s32 PS4_SYSV_ABI sceVideoOutGetResolutionStatus(s32 handle, SceVideoOutResolutionStatus* status);
-s32 PS4_SYSV_ABI sceVideoOutOpen(SceUserServiceUserId userId, s32 busType, s32 index,
-                                 const void* param);
+s32 PS4_SYSV_ABI sceVideoOutOpen(Libraries::UserService::OrbisUserServiceUserId userId, s32 busType,
+                                 s32 index, const void* param);
 s32 PS4_SYSV_ABI sceVideoOutClose(s32 handle);
 s32 PS4_SYSV_ABI sceVideoOutGetEventId(const Kernel::SceKernelEvent* ev);
 s32 PS4_SYSV_ABI sceVideoOutGetEventData(const Kernel::SceKernelEvent* ev, s64* data);