ALTER TABLE file_media_object
 DROP CONSTRAINT file_media_object_media_id_fkey,
  ADD CONSTRAINT file_media_object_media_id_fkey
         FOREIGN KEY (media_id) REFERENCES storage_object(id) ON DELETE NO ACTION DEFERRABLE;

ALTER TABLE file_media_object
 DROP CONSTRAINT file_media_object_thumbnail_id_fkey,
  ADD CONSTRAINT file_media_object_thumbnail_id_fkey
         FOREIGN KEY (thumbnail_id) REFERENCES storage_object(id) ON DELETE NO ACTION DEFERRABLE;