Create Message

Example response

{
  "id": 1,
  "subject": "Files.com Account Upgrade",
  "body": "We should upgrade our Files.com account!",
  "comments": [
    {
      "id": 1,
      "body": "What a great idea, thank you!",
      "reactions": [
        {
          "id": 1,
          "emoji": "👍"
        }
      ]
    }
  ]
}