def send_match_score_update(cls, match):
        users = PushHelper.get_users_subscribed_to_match(match, NotificationType.MATCH_SCORE)
        gcm_keys = PushHelper.get_client_ids_for_users(ClientType.names[ClientType.OS_ANDROID], users)

        if len(gcm_keys) == 0:
            return

        notification = MatchScoreNotification(match)
        message = notification.build(ClientType.OS_ANDROID, {ClientType.OS_ANDROID: gcm_keys})
        gcm_connection = GCMConnection()
        gcm_connection.notify_device(message)