{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "ItemBody",
  "type": "object",
  "description": "The body of a message.",
  "properties": {
    "contentType": {
      "type": "string",
      "description": "The type of the content."
    },
    "content": {
      "type": "string",
      "description": "The content of the body."
    }
  }
}