Retrieve data from JSON

I am trying to retrieve the values from JSON coming from a third-party script.  Below is the JSON sample

{
    "isSuccess": true,
    "result": [
        {
            "id": "3fd45eda-6bbd-e711-8124-e0071b710a01",
            "appName": "Select*IP \ufffd Reconcile",         
            "isPublished": false,
             "categoryList": [
             {
               "categoryTitle": "Admin/IT",
               "id": "ee5aa279-6bbd-e711-8124-e0071b710a01"
             }]
        }
    ]
}

I am playing around the ?eval but it throws an error. 

Syntax error in ?eval-ed string in line 6, column 36:
Lexical error: encountered "u" (117), after "\"Select*IP \\".
---end-message---

Is there any way to escape such Unicode("\ufffd" it may change also)to get the value of appName without replacing the keywords.