libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/sidechain_net_handler_eth.hpp

@@ -131,6 +131,7 @@ private:
 
    ethereum_function_call_encoder m_ethereum_function_call_encoder;
 
+   std::string signature;
    std::string geth_url;
    uint64_t t_id;
    std::string account_address;

libraries/plugins/peerplays_sidechain/sidechain_net_handler_eth.cpp

@@ -140,6 +140,12 @@ void eth_rpc_client::on_message(websocketpp::connection_hdl hdl, message_ptr msg
    ilog("json reposnse: ${list}", ("list", list));
 
    const auto& b_obj = list[0].get_object().find( "id" );
+   
+   if (true == list[0].get_object().contains( "error" )){
+	   elog("error in json reposnse: ${list}", ("list", list));
+	   return;
+   }
+
    std::string result_str = list[0].get_object().find( "result" )->value().as<std::string>(1);
    uint32_t num_owners = 0;
    uint32_t i = 0;
@@ -167,6 +173,7 @@ void eth_rpc_client::on_message(websocketpp::connection_hdl hdl, message_ptr msg
 	 balance = result_str;
 	 break;
       case ETH_SIGN:
+	 signature = result_str;
 	 break;
       case ETH_COINBASE:
          account_address = result_str;