Limiting Data Returned in API Call

I am trying to limit the size of the data I am calling through in my reporting APIs regarding the url value within actionDetails subtable… I’ve used the showColumns parameter to only return the actionDetails, but within the actionDetails subtable I am only interested in pulling the url value for each row… this is what I have so far: index.php?date=2020-04-01&expanded=1&filter_limit=300&format=XML&idSite=1&method=Live.getLastVisitsDetails&module=API&period=month&showColumns=actionDetails&segment=pageUrl%3D@mktid%253D&token_auth=**
Is there anything I can add to limit this call further?