Edit the Json sample Request for the existing http action

Hi,

I am trying to use the Http post action to post a request to external system. There is a change request from external system that I need to add one more parameter in my json request. Currently I do not see any option to edit the sample request json apart from doing it from scratch. Any idea on if we already have any option for this?

#HTTP POST Method #Screen Flow

Ex: current http request

{
    "email":"testusers@testing.com",
    "apikey":"xxxxxxxxxxxxxxxxx"
}

Updated 

{
    "email":"testusers@testing.com",
    "apikey":"xxxxxxxxxxxxxxxxx"
    "name":"testing"
}