MessageSent (index_topic_1uint16 targetChain, bytes payload)
[topic 0]:0xe1eb5360db578f113a6310b305152c604d0db0fd1547bd158bfb93da5a737885
[topic 1]:0x0000000000000000000000000000000000000000000000000000000000000001
0x000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000016345785d8a0000000000000000000000000000000000000000000000000000000000000000002a30786264343533303766643134623262396635353766656363663465363932666166333235393735626500000000000000000000000000000000000000000000