SwapUnderwritten (index_topic_1bytes32 identifier, index_topic_2address underwriter, uint96 expiry, address targetVault, address toAsset, uint256 U, address toAccount, uint256 outAmount)
[topic 0]:0xb2b54dbcb6f6e94446d5dc07448faa5aff2a1fa2ef8280125cbc19a9b9514c43
[topic 1]:0x9e51837d158a4be58dd44b791ab1102efb99a3fe74f85a0a75bb469a365b3316
0x0000000000000000000000000000000000000000000000000000000000b684250000000000000000000000008d4a70ffa99a8a74b1a9f4409352a5d2e9e9a1320000000000000000000000001bdd24840e119dc2602dcc587dd182812427a5cc0000000000000000000000000000000000000000000000000000003bc53dfcaf0000000000000000000000000000009586123fbaae1929b0768feb8bdbb0145d00000000000000000000000000000000000000000000000000000becc54e99be