Getting user_likes approved when the process happens in the backend

Question

I am trying to get the user_likes permission approved in my mobile app. It gets rejected because the process is not visible in the app. The Likes are processed in the back end, filtered for keywords and the likes themselves are never kept. The keywords are fully visible to the users. Did anybody have this happen to them ? Did you post your code in the request for permissions page , or a flow chart of the back end process ?