UpdateMerkleRoot (index_topic_1address owner, bytes32 previousRoot, bytes32 newRoot)
[topic 0]:0x8b67e84be49a1952e3818ead1025bf3a2299ec901780204d0dec64678b235287
0x0000000000000000000000000000000000000000000000000000000000000000d42071ab8fb369327d5330872dc02aebb2f3bb5f27029da83aa04efa892fdd05