curl --request GET \
  --url https://6827d740d717.ngrok-free.app/api/v1/contact-groups/{id} \
  --header 'Authorization: <api-key>'

{
  "id": "<string>",
  "teamId": "<string>",
  "name": "<string>",
  "contactCount": 123,
  "createdAt": "2023-11-07T05:31:56Z",
  "description": "<string>",
  "updatedAt": "2023-11-07T05:31:56Z"
}