curl --request GET \
  --url https://api.heyy.io/api/v2.0/attributes \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "name": "<string>",
      "type": "<string>",
      "isVisibleQuickEdit": true,
      "isVisibleContactsTable": true,
      "isVisibleContactCreate": true,
      "createdAt": "<string>",
      "updatedAt": "<string>",
      "externalId": "<string>",
      "description": "<string>"
    }
  ]
}