https://github.com/nuls-io/nuls/blob/274204b748ed72fdac150637ee758037d64c7ce5/core-module/kernel/src/main/java/io/nuls/kernel/model/NulsDigestData.java#L135
NulsDigestData
https://github.com/nuls-io/nuls/blob/274204b748ed72fdac150637ee758037d64c7ce5/core-module/kernel/src/main/java/io/nuls/kernel/model/NulsDigestData.java#L135