Definitely not sure....but maybe this one is for the virtual machine - there is an organization.subtenantLabel field here.
<your_vra>/api/consumer/resources/{resource_id}
And maybe this one is for the deployment?
<your_vra> /api/consumer/requests/{request_id}
Although not strictly relevant, I was picking up pieces that seemed helpful from this article: Executing Day 2 Actions with the vRA 7 REST API | | VMtoCloud.com