curl --request GET \
  --url https://api.collectpure.com/execution/payment-methods/v1 \
  --header 'x-api-key: <api-key>'

{
  "data": {
    "defaultPaymentMethodId": "<string>",
    "paymentMethods": [
      {
        "id": "<string>",
        "type": "<string>",
        "isDefault": true,
        "card": {
          "brand": "<string>",
          "last4": "<string>",
          "expMonth": 123,
          "expYear": 123
        },
        "bankAccount": {
          "bankName": "<string>",
          "last4": "<string>",
          "accountType": "<string>"
        }
      }
    ]
  }
}