ModelAndView spring mvc with jquery or javascript

I would like to know if there is any way to manipulate an object created by the Spring mvc ModelAndView in javascript. Example: I want to add the object through ModelAndView, convert a json and work with it in javascript.

public ModelAndView painelConteudo(HttpSession session) {

        List<PainelConteudo> painelConteudoList = painelConteudoDAO.findByFilialSegmentoIn(filialSegmentos);
        ModelAndView mv = new ModelAndView("painelconteudolista");
        mv.addObject("painelconteudolista", painelConteudoList);
        return mv;
 }

In the java script I would get the object panel and convert it into a json.