curl --request GET \
  --url https://api.revolv3.com/api/PaymentMethod/{paymentMethodId} \
  --header 'Authorization: Bearer <token>'

{
  "paymentMethodId": 1,
  "billingAddressId": 1,
  "billingAddress": {
    "addressId": 1,
    "addressLine1": "123 Main",
    "addressLine2": null,
    "city": "Santa Ana",
    "state": "CA",
    "postalCode": "90000",
    "phoneNumber": null,
    "email": null,
    "country": "US"
  },
  "billingFirstName": "John",
  "billingLastName": "Smith",
  "merchantPaymentMethodRefId": "payment-method-ref-id_hgays-213-4rf4",
  "paymentMethodAchDetails": null,
  "paymentMethodCreditCardDetails": {
    "binNumber": "411111",
    "paymentLast4Digit": "1111",
    "paymentExpirationDate": "1025",
    "accountUpdateMessage": null,
    "accountUpdateDateTime": null
  }
}