mxnodesecurity - how to add a SNMPv3 credential?

I wish to use unique SNMPv3 credentials for each of my server iLOs.

I found where to configure per-system SNMPv3 credentials via the HP SIM web page, but I can't seem to figure out how to accomplish the same task using mxnodesecurity command line utility.

Does anyone have a working example of using mxnodesecurity to add a SNMPv3 credential for a node? (not SNMPv2).