Implement ObjectHash for SignedMessage (#1521)
Implement ObjectHash for SignedMessage (#1521)


alekseysidorov/exonum,exonum/exonum,exonum/exonum,alekseysidorov/exonum,alekseysidorov/exonum,exonum/exonum,alekseysidorov/exonum,exonum/exonum