public function reply(string $msgId, int $index, int $commentId, string $content)
    {
        $params = [
            'msg_data_id' => $msgId,
            'index' => $index,
            'user_comment_id' => $commentId,
            'content' => $content,
        ];

        return $this->httpPostJson('cgi-bin/comment/reply/add', $params);
    }