curl --request POST \
  --url https://sandbox-biller-b2b.singapay.id/api/v1/prepaid/inquiry \
  --header 'Accept: <accept>' \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-PARTNER-ID: <x-partner-id>' \
  --data '
{
  "command": "plntok",
  "data": {
    "customer_id": "14012345678",
    "product_code": "SPPLNTOK"
  }
}
'

{
  "command": "plntok",
  "response_code": "00",
  "response_text": "Inquiry success",
  "data": {
    "amount": "50000",
    "customer_name": "JOHN DOE",
    "customer_id": "14012345678",
    "reference_number": "SPPLNTOKRJBL0012345678901749548209",
    "price": "52500",
    "created_at": "2025-06-10 16:36:49"
  }
}