{
  "token_id": "tok_example123456",
  "amount": 5000,
  "currency": "JPY",
  "description": "Monthly subscription payment",
  "store_name": "My Store",
  "buyer_data": {
    "user_id": "usr_12345",
    "ltv": 50000,
    "order_count": 10,
    "last_order_amount": 3000,
    "last_order_at": 30,
    "billing_address": {
      "line1": "Shibuya 1-1",
      "city": "Tokyo",
      "state": "Tokyo",
      "zip": "150-0001"
    }
  },
  "order": {
    "items": [
      {
        "quantity": 1,
        "id": "prod_001",
        "title": "Subscription Plan A",
        "description": "Monthly subscription",
        "unit_price": 5000
      }
    ],
    "tax": 500,
    "shipping": 0,
    "order_ref": "order_20260613_001"
  },
  "shipping_address": {
    "line1": "Shibuya 1-1",
    "city": "Tokyo",
    "state": "Tokyo",
    "zip": "150-0001"
  }
}