curl -X POST https://api.stateset.com/v1/checkouts/checkout_abc123/complete \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "payment_data": {
      "token": "spt_123",
      "provider": "stripe",
      "billing_address": {
        "name": "John Doe",
        "line_one": "123 Main St",
        "line_two": "Apt 4B",
        "city": "San Francisco",
        "state": "CA",
        "country": "US",
        "postal_code": "94105"
      }
    }
  }'

{
  "id": "checkout_abc123",
  "buyer": {
    "first_name": "John",
    "last_name": "Doe",
    "email": "john.doe@example.com",
    "phone_number": "+1234567890"
  },
  "status": "completed",
  "currency": "usd",
  "order_id": "order_xyz789",
  "payment": {
    "id": "pay_456",
    "status": "succeeded",
    "amount": 3750,
    "provider": "stripe"
  },
  "line_items": [
    {
      "id": "item_123",
      "item": {
        "id": "item_123",
        "quantity": 3
      },
      "base_amount": 3000,
      "discount": 0,
      "total": 3000,
      "subtotal": 3000,
      "tax": 0
    },
    {
      "id": "item_456",
      "item": {
        "id": "item_456",
        "quantity": 1
      },
      "base_amount": 500,
      "discount": 0,
      "total": 500,
      "subtotal": 500,
      "tax": 0
    }
  ],
  "fulfillment_address": {
    "name": "John Doe",
    "line_one": "456 Oak Ave",
    "city": "Los Angeles",
    "state": "CA",
    "country": "US",
    "postal_code": "90210"
  },
  "fulfillment_options": [
    {
      "type": "shipping",
      "id": "shipping_fast",
      "title": "Express Shipping",
      "subtitle": "2-3 business days",
      "carrier": "Shipping Co",
      "subtotal": 150,
      "tax": 0,
      "total": 150
    }
  ],
  "fulfillment_option_id": "shipping_fast",
  "totals": [
    {
      "type": "subtotal",
      "display_text": "Subtotal",
      "amount": 3500
    },
    {
      "type": "fulfillment",
      "display_text": "Shipping",
      "amount": 150
    },
    {
      "type": "tax",
      "display_text": "Tax",
      "amount": 100
    },
    {
      "type": "total",
      "display_text": "Total",
      "amount": 3750
    }
  ],
  "messages": [],
  "links": []
}