curl --request GET \
  --url https://api.getarbol.com/v1/contacts \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "id": "<string>",
      "givenName": "<string>",
      "familyName": "<string>",
      "displayName": "<string>",
      "primaryTelephone": "<string>",
      "primaryEmail": "<string>"
    }
  ],
  "total": 123,
  "hasMore": true,
  "nextCursor": "<string>"
}