curl --request PUT \
  --url https://api.ontora.com/v1/google-calendar/events/{event_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "summary": "<string>",
  "start": {
    "dateTime": "<string>",
    "date": "<string>",
    "timeZone": "<string>"
  },
  "end": {
    "dateTime": "<string>",
    "date": "<string>",
    "timeZone": "<string>"
  },
  "description": "<string>",
  "location": "<string>",
  "attendees": [
    {
      "email": "<string>",
      "displayName": "<string>",
      "responseStatus": "<string>",
      "optional": true
    }
  ],
  "calendarId": "primary"
}
'

{
  "id": "<string>",
  "summary": "<string>",
  "description": "<string>",
  "location": "<string>",
  "start": {},
  "end": {},
  "htmlLink": "<string>",
  "status": "<string>",
  "organizer": {},
  "attendees": [
    {}
  ],
  "hangoutLink": "<string>"
}