Is there a way to expose "deviceAssignedDate" as a searchable field?

New Contributor

In Settings -> Automated Device Enrollment and via the API call "device-enrollments" you can view "deviceAssignedDate" which is the date each device was enrolled in your orgs JAMF. Assuming DEP machines that should be relatively close to the purchase date of those machines. The date is already in JAMF and it seems silly to have to run an api call to write it back as a searchable field assigned to each machine object. Both ADE and Computer objects have serial numbers so I can't imagine the match would be that hard. 

Seems it would be a way to get that information without needing GSX

Is anyone already using "deviceAssignedDate" via the API and writing back?
Is it already a searchable field and I'm missing it?