Update (index_topic_1uint32 homeDomain, index_topic_2bytes32 oldRoot, index_topic_3bytes32 newRoot, bytes signature)
[topic 0]:0x608828ad904a0c9250c09004ba7226efb08f35a5c815bb3f76b5a8a271cd08b2
[topic 1]:0x000000000000000000000000000000000000000000000000000000006265616d
[topic 2]:0x06fbba65ef26ab9a2e0bcdc1307b24692ed8fa5565ce16c2cce2c05086ad1723
[topic 3]:0xe4b36eb1b76ae0a0519308627ca33e93fa126308d5e90c9156967009db1877d1
0x00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000041d7b378531b3937ab24d902692ffe3e15e5343e72c991911734dc6c1a60d43b097eb2f78af985952b6abecc5b2308a4f12f46c4f0952edec6385f86754a4dc0801c00000000000000000000000000000000000000000000000000000000000000