Only https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.0/ has the ReST API document available, and not corresponding versions for 3.1, 3.2 and 3.3.

I see differences in 3.0 ReST data structure and what is returned back from RHEVM 3.2 installation.

Please point to the REST API Guide for RHEVM 3.2.