{
  "type": "CalendarQuery",
  "properties": {
    "type": "Prop",
    "data": [
      {
        "type": "WebDav",
        "data": {
          "type": "GetETag"
        }
      },
      {
        "type": "CalDav",
        "data": {
          "type": "CalendarData",
          "data": {
            "properties": [],
            "expand": null,
            "limit_recurrence": null,
            "limit_freebusy": null
          }
        }
      }
    ]
  },
  "filters": [
    {
      "type": "Component",
      "comp": [
        "VCalendar",
        "VEvent"
      ],
      "op": {
        "type": "Exists"
      }
    }
  ],
  "timezone": {
    "type": "None"
  }
}