old_contents: # stdlib
  from typing import Any
  from typing import Dict
  
  # third party
  from pandas import DataFrame
  
  # syft relative
  from ...messages.user_messages import CreateUserMessage
  from ...messages.user_messages import DeleteUserMessage
  from ...messages.user_messages import GetUserMessage
  from ...messages.user_messages import GetUsersMessage
  from ...messages.user_messages import UpdateUserMessage
  from .request_api import GridRequestAPI
  
  
  class UserRequestAPI(GridRequestAPI):
      response_key = "user"
  
      def __init__(self, send):
          super().__init__(
              create_msg=CreateUserMessage,
              get_msg=GetUserMessage,
              get_all_msg=GetUsersMessage,
              update_msg=UpdateUserMessage,
              delete_msg=DeleteUserMessage,
              send=send,
              response_key=UserRequestAPI.response_key,
          )
  
      def __getitem__(self, key):
          return self.get(user_id=key)
  
      def __delitem__(self, key):
          self.delete(user_id=key)
  
new_contents: # stdlib
  from typing import Any
  from typing import Callable
  
  # syft relative
  from ...messages.user_messages import CreateUserMessage
  from ...messages.user_messages import DeleteUserMessage
  from ...messages.user_messages import GetUserMessage
  from ...messages.user_messages import GetUsersMessage
  from ...messages.user_messages import UpdateUserMessage
  from .request_api import GridRequestAPI
  
  
  class UserRequestAPI(GridRequestAPI):
      response_key = "user"
  
      def __init__(self, send: Callable):
          super().__init__(
              create_msg=CreateUserMessage,
              get_msg=GetUserMessage,
              get_all_msg=GetUsersMessage,
              update_msg=UpdateUserMessage,
              delete_msg=DeleteUserMessage,
              send=send,
              response_key=UserRequestAPI.response_key,
          )
  
      def __getitem__(self, key: int) -> Any:
          return self.get(user_id=key)
  
      def __delitem__(self, key: int) -> None:
          self.delete(user_id=key)
  
subject: Update User API - ADD type hints - Remove unused imports