BillDetail

{
    "currency": "string",
    "id": "1",
    "customerIdWithBiller": "GT5482AB",
    "reference": "C4920F94022",
    "amount": 12.99,
    "minimumAmount": 12.99,
    "maximumAmount": 12.99,
    "dueDate": "2019-08-24",
    "additionalData": [
        {
            "custom-fields": {
                "property1": "string",
                "property2": "string"
            }
        }
    ]
}