发布到Microsoft bot电报通道返回错误400

Question

当我使用Postman向我的Microsoft机器人发送消息时，消息将发送到我的Skype。当我将消息发布到Telegram频道时，我收到错误消息400 Bad Request（由于语法错误，请求无法完成。以下是帖子正文。

{

    "type": "message",
    "locale": "en-Us",
    "channelID":"telegram", 

    "from": {
    "id": "28:01a4752e-6cb0-459f-b94f-.....",
    "name": "bot"
    },
    "recipient": {
    "id": "29:1rNJPaNGCMPithEDVjoN00SU5S6fG......",
    "name": "My name"
    },
    "conversation": {
    "id": "29:1rNJPaNGCMPithEDVjoN00SU5S6fGZ"
    },

    "channelData":
    {
         "method": "sendMessage",
         "parameters":
         {

             "text": "This message is HTMLformatted.",
             "parse_mode": "HTML"

         }
    }

}