Where are settings and site data stored in Ajenti V?

Question

Ajenti

I want to make a vps backup in order to restore it on another service without a long setup.
I don't know much about the Ubuntu file structure yet. nginx settings I know where the sites are - I know how to backup installed apt packages - I know, everything else seems to be by default.
The server has the Ajenti control panel with the Ajenti V web hosting plugin. About a hundred sites have been added to the panel, and I don’t want to drive them again on the new server.
So, what directory should I back up so that Ajenti V can "pick up" already registered sites on the new server?