def enable_post_notifications(self, user_id):
        """
        Turn on post notifications for specified user.

        :param user_id:
        :return:
        """
        res = self._call_api(
            'friendships/favorite/{user_id!s}/'.format(**{'user_id': user_id}),
            params=self.authenticated_params)
        return res

        Turn on post notifications for specified user.

        :param user_id:
        :return:
        
instagram_private_api/endpoints/friendships.py