json format documentation

Hi
We bought commecial licence.
Where is the documentation on the json formats to use for each type of graph?

For example I want a simple “number” tile with a json as you show on your website at https://dashboardbuilder.net/json-dashboard (I can’t attach screen copy, the button “attachments” below does not work).

I make the following json file

{“people”:150}

But DashboardBuilder do nothing with it. How should it be done?

And for other type (stack, table etc…) ?

Thank you

Best regards,

EDIT : For one tile it work with following json
“\[\[150\]\]”
But for other graph? where is the doc?
Thank’s