android - Android Klaxon library: I can't handle a complex json response

Question

I get a json response in android studio like this:

{
  "status": "ok",
  "data": {
        idx:7397,
        aqi:71,
        time:{
            v:1481396400,
            s:"2016-12-10 19:00:00",
            tz:"-06:00"
        },
        city:{
            name:"Chi_sp, Illinois",
            url:"https://aqicn.org/city/usa/illinois/chi_sp/",
            geo:["41.913600","-87.723900"]
        },
        iaqi:{
            pm25:{
                v:71
            }
        },
        forecast:{
            daily: {
                pm25: [{
                    avg: 154,
                    day: "2020-06-13",
                    max: 157,
                    min: 131
                }, {
                    avg: 163,
                    day: "2020-06-14",
                    max: 173,
                    min: 137
                }]
            }
        }
}

and I want to get some of the parameters like aqi. I have tried a lot of different approaches using the Klaxon library but none came to a result.