curl --request GET \
  --url 'https://api.cal.com/v1/attendees?apiKey='

{
  "attendees": [
    {
      "id": 251,
      "bookingId": 313,
      "name": "John Doe",
      "email": "[email protected]",
      "timeZone": "Asia/Jerusalem"
    },
    {
      "id": 252,
      "bookingId": 314,
      "name": "Jane Doe",
      "email": "[email protected]",
      "timeZone": "Asia/Dubai"
    }
  ]
}