"type": "paypal_gateways",
"self": "https://yourdomain.commercelayer.io/api/paypal_gateways/xYZkjABcde"
"name": "US payment gateway",
"created_at": "2018-01-01T12:00:00.000Z",
"updated_at": "2018-01-01T12:00:00.000Z",
"reference": "ANY-EXTERNAL-REFEFERNCE",
"reference_origin": "ANY-EXTERNAL-REFEFERNCE-ORIGIN",
"self": "https://yourdomain.commercelayer.io/api/paypal_gateways/xYZkjABcde/relationships/payment_methods",
"related": "https://yourdomain.commercelayer.io/api/paypal_gateways/xYZkjABcde/payment_methods"
"self": "https://yourdomain.commercelayer.io/api/paypal_gateways/xYZkjABcde/relationships/paypal_payments",
"related": "https://yourdomain.commercelayer.io/api/paypal_gateways/xYZkjABcde/paypal_payments"