function updateSellerCanCancelAfter(
        bytes32 _tradeHash,
        uint32 _paymentWindowInSeconds
    ) public onlyDexc2c returns(bool){
        require(escrows[_tradeHash].exists, "Escrow not exists");
        uint32 _sellerCanCancelAfter = uint32(block.timestamp) + _paymentWindowInSeconds;
        escrows[_tradeHash].sellerCanCancelAfter = _sellerCanCancelAfter;
        emit Updated(_tradeHash, _sellerCanCancelAfter);
        return true;
    }