Json property matters...

gistfile1.txt

@JsonPropertyOrder({
    "aggregateInterval",
    "amount",
    "cardAmount",
    "cardAmountWithoutFee",
    "cardNetAmount",
    "cardPaymentFee",
    "cardRefundAmount",
    "cardRefundVatAmount",
    "cardVatAmount",
    "cashAmount",
    "cashNetAmount",
    "cashRefundAmount",
    "cashRefundVatAmount",
    "cashVatAmount",
    "merchant",
    "netAmount",
    "nrCardPaymentRefunds",
    "nrCardPayments",
    "nrCashPaymentRefunds",
    "nrCashPayments",
    "nrPurchases",
    "nrRefunds",
    "purchaseAmount",
    "purchaseNetAmount",
    "purchaseVatAmount",
    "refundAmount",
    "refundNetAmount",
    "refundVatAmount",
    "showVat",
    "timePeriodStartDate",
    "vatAmount"})