Format export from method Live.getLastVisitsDetails

I am new to piwik and just now diving into the API calls.

What I really want is a “clean” csv export from the visitor log, without all the clutter which is included when exporting that page.

I would like to tweek the export from the method Live.getLastVisitsDetails and thought I could just change the parameters which are included in the export-file by changing the API call URL but I cant find any documentation on how to do this, or if its even possible?

try add &columns=column1,column2 to the API call?