Modify requestBody structure


Let’s say I have a JSON file with the following structure:

{ "firstName": "${firstName}", "lastName" : "${lastName}", "age" : ${age}, "address" : { "streetAddress": "${street}", "city" : "${city}", "postalCode" : "${postal}" } }

I can make a POST request and use the file above, like this:


But is it possible to modify json body structure before making a request? For example, I don’t need to send a postalCode field every time. What is the right way to remove $.address.postalCode node before request sending?