Requirement to save a JSON string in a zipped file on the VSE server that runs the Virtual Service.
Service Virtualization all supported releases
The "Save Property Value to File" filter and the "Execute External Command" step can be used.
There are different commands that can be used to zip a file.
On Windows, powershell can be used for example:
powershell -Command Compress-Archive -Path myjson.txt -DestinationPath myjson.zip -Force