UpdateMaxNumTxInChunk (uint256 oldMaxNumTxInChunk, uint256 newMaxNumTxInChunk)
[topic 0]:0x6d0f49971e462a2f78a25906f145cb29cd5e7bd01ebf681ac8f58cb814e5877a
0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000064