Customising JSON Reporter output with Newman

Hello, I’m trying to customise the output file that gets generated with newman. The json file is much too large and was wondering if theres a way to only output certain items that I require. I’ve tried using the json-summary package but it’s not enough of the info I need. Do I need to create a custom reporter? are there any docs for customising json reporters? all I can find are HTML reporter help docs.