MerkleRootUpdated (bytes32 oldMerkleRoot, bytes32 newMerkleRoot)
[topic 0]:0xfd69edeceaf1d6832d935be1fba54ca93bf17e71520c6c9ffc08d6e9529f8757
0x5df754cf5f09052726162773698e48d055df1e1f3f41edf832ed614726917000e6cf0254c0e2171bdcb9cc949433788d92fa84dcf71e2c2f6436d40a8a2ae7e9