Shipping Address

"country": "USA",
"address: "214 Old Eagle Rd.",
"city": "New York",
"zip_code": "10003",
"fee": 0,

The fee should be a float number you charge for delivering the goods. If you send a request to us, each parameter is optional to fill from your side, if some are missing we assume it's the same as the billing details, if those are also missing we will ask the customer to fill it out on checkout.