Swap (uint256 lastPrice, uint256 openInterestNotional)
[topic 0]:0x015fc8ee969fd902d9ebd12a31c54446400a2b512a405366fe14defd6081d220
0x00000000000000000000000000000000000000000000000001a8057ed9d6822b0000000000000000000000000000000000000000000000000032443399822f7c