curl --request GET \
  --url https://api.spacebring.com/visitors/contacts/v1/{contactId} \
  --header 'Authorization: Basic <encoded-value>'

{
  "contact": {
    "contact": {
      "createDate": "2023-11-07T05:31:56Z",
      "date": "2023-11-07T05:31:56Z",
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "locationRef": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "visitor": {
        "email": "<string>",
        "name": "<string>",
        "phoneNumber": "<string>",
        "surname": "<string>"
      }
    }
  }
}