def METHOD_NAME(self, user_ids, msg):
    params = {
        'receive_id_type': 'user_id'
    }
    """ 
    https://open.feishu.cn/document/common-capabilities/message-card/message-cards-content
    /using-markdown-tags
    """
    body = {
        'msg_type': 'interactive',
        'content': json.dumps({'elements': [{'tag': 'markdown', 'content': msg}]})
    }
    invalid_users = []
    for user_id in user_ids:
        body['receive_id'] = user_id
        try:
            logger.info(f'Feishu send text: user_ids={user_ids} msg={msg}')
            self._requests.post(URL().send_message, params=params, json=body)
        except APIException as e:
            # 只处理可预知的错误
            logger.exception(e)
            invalid_users.append(user_id)
    return invalid_users