post https://api.piriod.com/payments/
Creates a Payment object. When you want to pay a Payment before, you must create a Source and attach it to the Payment through the authorize resource. If the Source gateway belongs to a payment gateway with single_use
usage attribute, it should be paid through the pay resource, while if it belongs to a payment gateway with reusable
usage attribute, it will immediately try to charge the credit or debit card of the Customer.