It is now like that
{"canfd":false,"ext":false,"rtr":false,"canid":672,"dlc":5,"data":[0,0,0,0,0,0,128,128]}

I need to change it like that
{"canfd":false,"ext":false,"rtr":false,"canid":672,"dlc":5,"data":[0,0,0,0,0,0,128,128]}

It is now like that
{"canfd":false,"ext":false,"rtr":false,"canid":672,"dlc":5,"data":[0,0,0,0,0,0,128,128]}

I need to change it like that
{"canfd":false,"ext":false,"rtr":false,"canid":672,"dlc":5,"data":[0,0,0,0,0,0,128,128]}

Have you tried passing it through a JSON node?