curl --request GET \
  --url https://app.untetherlabs.com/api/v1/appointment-types \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "name": "<string>",
      "length": 123,
      "allowedRoles": [
        "3c90c3cc-0d44-4b50-8888-8dd25736052a"
      ],
      "skillRequirement": {
        "type": "equal",
        "skill": "<string>",
        "value": "<string>"
      }
    }
  ],
  "cursor": "<string>"
}