It is part of a full person object: It is the resources.html.ref property
If you load up their user object, you will see a series of “resources” at the top of the payload. Scroll to the “HTML” resource, and this represents the profile page of a specific person.
See: https://developers.jivesoftware.com/api/v3/cloud/js/Person.html#property_resources towards the bottom of the page.
Hope that helps,
Thanks Ryan, worked perfectly.