Requires App Review.
The user_likes permission allows your app to read a list of all Facebook Pages that a user has liked. The allowed usage for this permission is to meaningfully improve the quality of a user's experience in your app. It must be clear to the user how their data is used to provide that experience. You may also use this permission to request analytics insights to improve your app and for marketing or advertising purposes, through the use of aggregated and de-identified or anonymized information (provided such data cannot be re-identified).