How to post an object to a API with x-www-form-urlencoded content type

I'm trying to post an object to an API with x-www-form-urlencoded content type. I've tried with and without stringifying.

Without stringifying, it ends up like this:
recurring object

When stringifying, it ends like like this:

Here is the query configuration (with stringify in screenshot)

What am I doing wrong?

Hey @tannerbarlow!

Do you happen to have an example of the exact format your API is expecting from this request? (e.g. in a CURL or Postman request)

Hey @tannerbarlow - this looks like the Stripe API. How did you solve this issue?

I've come across it too.