"MANAGE AS NODE" from API?

I have been leveraging Deploy and DeployToNode from Orion.AgentManagement.Agent, the agents install without error and show up as "Agent is running" & "Connected".
I know how to use the admin UI to "MANAGE AS NODE", but it would be nice if I could automate that step as well.

Does there exist a call I can make to the API to do that?

thanks