{
  "id": "<string>",
  "type": "externalcalendars",
  "attributes": {
    "name": "<string>",
    "source": "<string>",
    "availability_type": "<string>",
    "url": "<string>",
    "is_invalid_url": true,
    "event_count": 123,
    "anonymize_entries": true,
    "import_transparent": true,
    "timezone": "<string>",
    "updated_at": "<string>",
    "created_at": "<string>"
  },
  "links": {
    "self": "<string>"
  },
  "relationships": {
    "resource": {
      "data": {
        "type": "<string>",
        "id": "<string>"
      },
      "links": {
        "self": "<string>"
      }
    },
    "external_resource": {
      "data": {
        "type": "<string>",
        "id": "<string>"
      },
      "links": {
        "self": "<string>"
      }
    }
  }
}