ML Online Endpoint pre-fill sample inference json structure

Question

Hello Microsoft Community,

I have deployed a Managed Online Endpoint on Azure. When I go to ML Studio > Endpoints > Test, the JSON sample inference is empty. Is there a way to generate a template of the testing inference?
For instance, have the JSON template pre populated with the necessary fields.

For reference, in the screenshot you can see where I would like to have the template available instead of {}:

I would like to have the Input section populated with something like

{
	"input_string": "This is a sample request"
}