curl --request POST \
  --url https://api.x.com/2/chat/conversations/{conversation_id}/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "encoded_message_create_event": "<string>",
  "message_id": "<string>",
  "conversation_token": "<string>",
  "encoded_message_event_signature": "<string>"
}
'

{
  "data": {
    "encoded_message_event": "<string>"
  },
  "errors": [
    {
      "title": "<string>",
      "type": "<string>",
      "detail": "<string>",
      "status": 123
    }
  ]
}