curl --request GET \
  --url http://localhost/api/incidents/{incident}/updates/{update}

{
  "data": {
    "id": "<string>",
    "attributes": {
      "id": 123,
      "updateable_id": 123,
      "updateable_type": "<string>",
      "message": "<string>",
      "created": {
        "human": "<string>",
        "string": "<string>"
      },
      "updated": {
        "human": "<string>",
        "string": "<string>"
      },
      "status": {
        "human": "<string>",
        "value": "<string>"
      }
    }
  }
}