code: func NewVerifyMessageCmd(address, signature, message string) *VerifyMessageCmd {
  	return &VerifyMessageCmd{
  		Address:   address,
  		Signature: signature,
  		Message:   message,
  	}
  }
docs: // NewVerifyMessageCmd returns a new instance which can be used to issue a
  // verifymessage JSON-RPC command.