{
 "error": {
  "errors": [
   {
    "domain": "calendar",
    "reason": "cannotUnsubscribeFromOwnedCalendar",
    "message": "Data owner of a calendar cannot remove calendar list entry for that calendar."
   }
  ],
  "code": 403,
  "message": "Data owner of a calendar cannot remove calendar list entry for that calendar."
 }
}
