{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api-evangelist.github.io/basecamp/json-schema/messageupdaterequest-schema.json",
  "title": "MessageUpdateRequest",
  "type": "object",
  "properties": {
    "subject": {
      "type": "string",
      "description": "Updated message subject"
    },
    "content": {
      "type": "string",
      "description": "Updated message body in HTML format"
    },
    "category_id": {
      "type": "integer",
      "description": "Updated message category ID"
    }
  }
}