{
  "biller_code": "18689859859",
  "product_code": "0000",
  "amount": "50",
  "currency": "TTD",
  "customer_reference": "1023358",
  "customer_mobile_no": "18685125125",
  "external_reference": "CU-20260704-000123",
  "client_receipt_id": "ACME-RCPT-981234",
  "id_type": "DP",
  "id_number": "732711",
  "description": "Bill payment",
  "other_data": "optional trace metadata",
  "metadata": {
    "source": "partner"
  }
}