Formatting JSON for HTTP Requests

I’m fairly new to JSON, so please bear with me…

I have an app that I want to pull data from into Grafana. I’ve set up a JSON API data source, but I’m stumbling over how to format the requests.

My app runs on a servlet, in my case, https://localhost/na

The app’s documentation show examples for requesting data as below…

https://localhost/na?json={}

I can use this method in PostMan or Boomerang and get what I need perfectly.

Could anyone share how I could format the requests in the JSON API Query?

I understand Fields, Path, Params, etc, but I cannot make sense of how to fill out a request in the JSON API Query, within Grafana.

Any help would be most definitely appreciated!