How can i read json data

[Lakshmi53]

  {

  "jobs": [

        {

                "details": {

                "code": "123"

            },      

           "userinfo": [

                {

                    "user": "test"

                },

                {

                    "user": "abc"

                }

            ]

            }

]

}

above is the sample JSON i have. using above json how can i get user details.

[Lakshmi53]

i written like this in API but not working. i need to map users with different variables.

    var details = request.body.data;

    details.jobs.forEach(function(job) {

        job.userinfo.forEach(function(user) {

            gs.info('123456: ' +user.user);

        });

    });