Geeting error in chat "Unsupported type of message" when sending message from chatbot

[albin]

I’m using the following endpoint to send a message to a user on behalf of chatbot.
https://api.zoom.us/v2/im/chat/messages
with following payload

{
  "robot_jid": "<bot jid>",
  "to_jid": "<to jid>",
  "user_jid": "<to user jid>",
  "content": {
    "head": {
      "text": "I am a header",
      "sub_head": {
        "text": "I am a sub header"
      }
    },
    "body": [{
      "type": "message",
      "text": "I am a message with text"
    }]
  }
}

I’m getting API response status code as 201 created with message_id in response.

Error?
I’m getting error Unsupported type of message in chat window in webapp. But I’m getting it correct in zoom windows app.

Webapp

Windows app