Working on user module

app/routers/user.py

@@ -327,6 +327,17 @@ async def lookup_username_obj(
     return mk_resp(data=data)
 
 
+# Authenticate a username and password
+@router.get('/authenticate', response_model=Resp_Body_Base)
+async def user_authenticate(
+        username: str = Query(..., min_length=2, max_length=50),
+        password: str = Query(..., min_length=6, max_length=50),
+        x_account_id: str = Header(...),
+        ):
+
+    return mk_resp(data=None, status_code=501) # Not  Implemented
+
+
 @router.get('/{obj_id}', response_model=Resp_Body_Base)
 async def get_user_obj(
         obj_id: str = Query(..., min_length=1, max_length=22),