Extract API--Altering the delivered response

Having reviewed the docs briefly, is there a way to change the result package?  Working on an MVP using AWS Lambda and Step Functions, at this juncture, I only need the json file for text-only extraction.  It would be useful to get direct access to that file vs. having to add unzipping and extraction on my end. Appreciate any trailheads/tips I have missed or if a toggle couple be added.