How do you set the hostname via http POST in IPAM?

My question is pretty much the same as in this thread:

https://thwack.solarwinds.com/thread/68357

I'm trying to set the hostname with a POST in curl (specifically pyCurl) but I'm coming up with nothing.  I can successfully mark an IP as used or available by submitting:

objectId=3923&ids=128&entity=IPAM.IPNode&verb=UpdateManyStatus&ipstatus=1

What are the variables I need to set so I can set things like hostname, alias and comment?

It is surprisingly difficult to find adequate documentation for this product.  Where are ids, objectid, entity, verb and ipstatus documented?  I suspect if I can find that I can find other things to set.

Thanks!