Correctly Connect My App to Make. Not Sure I'm Doing It Right

So I’m trying to create a subscription tier for merchants within my fintech app. The issue I’m not sure I’m doing it right.

Here is the set up

Here is me setting up the tier for Business roles in my app. I have no idea how to connect the tiers. I’m not even sure if the URL I have set is the correct one to be using

The tiers I had setup within my app

Here is the account section:

I used a JSON to create a trigger that will go off if the user subscribes to pay but I don’t know how I would fill the data here as I’m missing a few steps I believe.