style(internal_user_endpoints.py): add response model to /user/list endpoint

make sure we maintain consistent response spec

litellm/proxy/management_endpoints/internal_user_endpoints.py

@@ -43,6 +43,9 @@ from litellm.types.proxy.management_endpoints.common_daily_activity import (
     SpendAnalyticsPaginatedResponse,
     SpendMetrics,
 )
+from litellm.types.proxy.management_endpoints.internal_user_endpoints import (
+    UserListResponse,
+)
 
 router = APIRouter()
 
@@ -903,11 +906,13 @@ async def get_user_key_counts(
     "/user/get_users",
     tags=["Internal User management"],
     dependencies=[Depends(user_api_key_auth)],
+    response_model=UserListResponse,
 )
 @router.get(
     "/user/list",
     tags=["Internal User management"],
     dependencies=[Depends(user_api_key_auth)],
+    response_model=UserListResponse,
 )
 async def get_users(
     role: Optional[str] = fastapi.Query(

litellm/types/proxy/management_endpoints/internal_user_endpoints.py

@@ -0,0 +1,18 @@
+from typing import Any, Dict, List, Literal, Optional, Union
+
+from fastapi import HTTPException
+from pydantic import BaseModel, EmailStr
+
+from litellm.proxy._types import LiteLLM_UserTableWithKeyCount
+
+
+class UserListResponse(BaseModel):
+    """
+    Response model for the user list endpoint
+    """
+
+    users: List[LiteLLM_UserTableWithKeyCount]
+    total: int
+    page: int
+    page_size: int
+    total_pages: int