FPMMBuy (index_topic_1address buyer, uint256 investmentAmount, uint256 feeAmount, index_topic_4uint256 outcomeIndex, uint256 outcomeTokensBought)
[topic 0]:0x4f62630f51608fc8a7603a9391a5101e58bd7c276139366fc107dc3b67c3dcf8
[topic 2]:0x0000000000000000000000000000000000000000000000000000000000000000
0x0000000000000000000000000000000000000000000000056bc75e2d63100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a7195df8b0eb71958