The following code:

sol::state lua;                                                                      

lua.open_libraries(  sol::lib::base  );

sol::table result = lua.script(   R"( 'machineData={serial=1,name="mob2",}'  )"    );                     

throws the following error:

[sol2] An error occurred and has been passed to an error handler: sol:
syntax error: [string ” ‘machineData={serial=1,name=”mob2″,}’ “]:1:
unexpected symbol near ”machineData={serial=1,name=”mob2″,}”
terminate called after throwing an instance of ‘sol::error’