OrderFulfilled (bytes32 key, uint64 sequence, uint256 netAmount)
[topic 0]:0x6ec9b1b5a9f54d929394f18dac4ba1b1cc79823f2266c2d09cab8a3b4700b40b
0xed8b470affd314edf6e9732bd6f69f162c913b501e01fbefd8e166c3f54821c3000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d1e40a3fc32766