SwapBackResult (uint256 amountIn, uint256 amountOut)
[topic 0]:0x877973055cc76aebb6c1702046758fb56e804bca4a8bf998824b99ed02bbbafd
0x000000000000000000000000000000000000000000001fdee525dd11d4c900000000000000000000000000000000000000000000000000000099e896e1249589