curl --request POST \
  --url http://localhost:3156/checkout/pay \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --header 'x-merchant-id: <api-key>' \
  --data '
{
  "externalId": "ORDER-123",
  "customer": {
    "externalId": "CUST-123",
    "firstName": "John",
    "lastName": "Doe",
    "email": "john.doe@example.com",
    "phoneNumber": "+1234567890"
  },
  "amount": 100.5,
  "currency": "USD",
  "paymentMethod": {
    "options": {}
  },
  "billingAddress": {
    "address": "123 Main St",
    "city": "New York",
    "state": "NY",
    "postalCode": "10001",
    "country": "US"
  },
  "description": "Payment for order #123"
}
'

{
  "externalId": "ORDER-123",
  "amount": 100.5,
  "currency": "USD",
  "payments": [
    {
      "id": "856b4a29-a7e5-4726-87d4-77e55d5ecfbf",
      "status": "PENDING_CAPTURE",
      "paymentMethodType": "PAYCASH",
      "amount": "200.99",
      "refundedAmount": "0.00",
      "paymentMethodId": "<string>",
      "createdAt": "2025-05-19T18:14:32.424Z",
      "updatedAt": "2025-05-19T18:14:32.523Z"
    }
  ],
  "orderNumber": "C25123101",
  "description": "Payment for order #123",
  "billingAddressLine": "123 Main St",
  "billingCity": "New York",
  "billingState": "NY",
  "billingPostalCode": "10001",
  "billingCountry": "US",
  "customer": {
    "externalId": "CUST-123",
    "firstName": "John",
    "lastName": "Doe",
    "email": "john.doe@example.com",
    "phoneNumber": "+1234567890",
    "active": true,
    "createdAt": "2024-03-20T10:00:00Z",
    "updatedAt": "2024-03-20T10:00:00Z"
  },
  "createdAt": "2024-03-20T10:00:00Z",
  "updatedAt": "2024-03-20T10:00:00Z",
  "paymentMethod": {
    "speiDetails": {
      "clabe": "012345678901234567"
    },
    "paycashDetails": {
      "reference": "7041621293386809"
    }
  }
}