Present Data to user.Is activiti pluggable to custom entity

Hi

I am starting a PoC on Activiti BPM.

I have requirement of a  task moving to different user .

My Question is , how do i present my entity related data to each user level ?because activiti creates everything as Task and then i have to populate for data to present data to user.

Is there any other way to (like my entity inherit activiti task)  plugin my entity to activiti?

I read about custom entity model. But that came as a shock to me to know that this is only supported in APS.

Just double checking.

Thanks in Advance.

Rojan