How can I get request body

[seadhy]

I am having a problem with the BAS(BrowserAutomationStudio) application. How can I capture the body, i.e. payload, of a request? I can get the response of the request with cache, but I couldn't get the body of it. I can manually enter the developer tool and import it, but I couldn't find a way to automate it. Can you help me?