For those that find this question and would like the answer, I’ve included an example of contents of my .json file below.
{“ImportGroups”:[{“GroupName” : “Test”,“Filenames” : [Path\To\Assets],“DestinationPath” : “/Game/Test”,“bReplaceExisting” : “true”,“bSkipReadOnly” : “true”,“ImportSettings”:{“StaticMeshImportData”:{“bRemoveDegenerates”:“false”}}}]}