curl --request POST \
  --url https://api.cal.com/v2/calendars/{calendar}/disconnect \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '{
  "id": 10
}'

{
  "status": "success",
  "data": {
    "id": 123,
    "type": "<string>",
    "userId": 123,
    "teamId": 123,
    "appId": "<string>",
    "invalid": true
  }
}