Request body "raw"

Hey there,

I am really missing possibility to see “raw” JSON under request Body, because the Formatted version is not valid JSON (does not have quotes) and the CURL is rather inconvenient as I use Postman for the request to the backend, so there is no really easy way (or I don’t know about it) to just copy&paste the JSON body…

Do you think it is possible to add this feature? If you want I could do PR, if it would be accepted…