curl --request GET \
  --url http://localhost:{port}/api/v1/messages/{messageId} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "body": "<string>",
  "fromMe": true,
  "timestamp": 123,
  "isStarred": true,
  "isPinned": true,
  "mentions": [
    "<string>"
  ],
  "groupMentions": [
    "<string>"
  ],
  "reactions": [
    {
      "reaction": "<string>",
      "senderId": "<string>",
      "timestamp": 123
    }
  ]
}