curl --request GET \
  --url https://services.leadconnectorhq.com/calendars/groups \
  --header 'Authorization: Bearer <token>' \
  --header 'Version: <version>'

{
  "groups": [
    {
      "locationId": "ocQHyuzHvysMo5N5VsXc",
      "name": "group a",
      "description": "group description",
      "slug": "15-mins",
      "isActive": true,
      "id": "ocQHyuzHvysMo5N5VsXc"
    }
  ]
}