{
  "audio_book": {
    "properties": {
      "author": {
        "type": "text",
        "index": "false"
      },
      "title": {
        "type": "text",
        "index": "false"
      },
      "readBy": {
        "type": "text",
        "index": "false"
      },
      "description": {
        "type": "text"
      }
    }
  }
}