0xa3a4506f…a2adsent to0x8fd31210…67b7·#4,354,452·0x37cf5a49…008937
sig.substr(0, 64)sig.substr(64, 64)
0xa3a4…a2ad
All memos sent from and to 0xa3a4…a2ad.
0xa3a4506f…a2adsent to0x8fd31210…67b7·#4,354,406·0x136d856d…6c665f
'0x' + sig.substr(0, 64)'0x' + sig.substr(64, 64)