def METHOD_NAME(self, client, track_id, comments):
    def bookmark_for(com):
        text = "\"%s\" – %s" % (com['body'], com['user']['username'])
        return max(0, int((com.get('timestamp') or 0) / 1000.0)), text
    try:
        song = self.song_by_track_id(track_id)
    except KeyError:
        # https://github.com/quodlibet/quodlibet/issues/2410
        print_exc()
        return
    song.bookmarks = [bookmark_for(c) for c in comments]
    print_d(f"Updated song bookmarks for {song('title')}")