Add users with mgmt_cli

[Peter_Kjolner]

I need to add hundreds of regular users (not Access Roles or administrators) for VPN access to the database and am trying to find a way to automate the task. They also need to be assigned a specific Authentication method (Securid).
I was hoping to use mgmt_cli and a csv file to run a batch, but so far I've only seen how to add other objects, not users. Is this even possible?

LDAP is not an option, this is for a transition between LDAP and Radius.