Why is CREATED BY not showing in the CONTACT lookup API?

/api/rest/2.0/data/contact/{id}

When I use the above API to lookup a contact, I want to know why I don't see createdby in the response.

https://docs.oracle.com/en/cloud/saas/marketing/eloqua-rest-api/op-api-rest-2.0-data-contact-id-get.html

In the official documentation, it says 'createdby' in the response.

The same is true for permissions, even when querying with complete.