C# modal to represent Nesting JSON in Unity JSONUtility

Question

I am wanting to build the C# data object to represent the following JSON. I am using unity's JsonUtility. I have used the JSONUtility before but only with a simpler JSON structure. However I am not sure nesting can be done as I have been searching for examples without any luck.

{
"datacharts":[{
    "0000000009":[{ 
            "dateTime": "2016-09-14 00:14:20",
            "seconds": "60.50"
        },
        {
            "dateTime": "2016-09-14 00:15:20",
            "seconds": "57.23"
        },{ 
            "dateTime": "2016-09-14 00:18:20",
            "seconds": "61.230"
        },
        {
            "dateTime": "2016-09-14 00:23:20",
            "seconds": "55.875"
        }
    ] 
 }]
}

My current C# model.

[System.Serializable]
public struct Drivers
{
        public DateTime[] dataTime; //time stamp unique enough to group each points?
        public float[] seconds;
} 

[System.Serializable]
public class DataCharts {
    public List<Drivers> driverIds;
}

[System.Serializable]
public class DataList{

public List<DataCharts> availableData;
}

I'm not sure this answer will help me as I don't understand what it's wrapping. https://forum.unity3d.com/threads/how-to-load-an-array-with-jsonutility.375735/#post-2585129

Should my Json be modal differently? I am wanting to save driver times to display in a bar chart. So every driver would have a timestamp and the lap time.

UPDATE: after reading this question/answer Communicate Unity application via a series of Json

I've remodelled the json and c#. Json

{
    "driverId": "0000000009",
    "dataPoints": [{
                "dateTime": "2016-09-14 00:14:20",
                "seconds": "60.50"
            },{
                "dateTime": "2016-09-14 00:15:20",
                "seconds": "57.23"
            },{ 
                "dateTime": "2016-09-14 00:18:20",
                "seconds": "61.230"
            },
            {
                "dateTime": "2016-09-14 00:23:20",
                "seconds": "55.875"
        }]
} 

C#

[Serializable]
public struct Drivers
{
    public string driverId;
    public List<DataPoints> points;
} 

[Serializable]
public class DataPoints {
    public string dateTime;
    public string seconds;
}

[Serializable]
public class DataList{
    public List<Drivers> availableData;
}

Answer 1

I've come to realize the answer is that it's not meant to do nesting. Unity JSONUtility is for retrieving JSON data from a document database. I.E if you were using firebase you'd make your call server/datacharts/unique-driverid/. This would return all dateTime and values for that driver. Your class definition would just be;

{
    "driverId": [{
                "dateTime": "2016-09-14 00:14:20",
                "seconds": "60.50"
            },{
                "dateTime": "2016-09-14 00:15:20",
                "seconds": "57.23"
            },{ 
                "dateTime": "2016-09-14 00:18:20",
                "seconds": "61.230"
            },
            {
                "dateTime": "2016-09-14 00:23:20",
                "seconds": "55.875"
        }]
} 

As I'm only saving the data locally, I had to flatten my data structure.

{
   "dataPoints": [{
                "dateTime": "2016-09-14 00:14:20",
                "seconds": "60.50",
                 "driverId": "0000000009"
            },{
                "dateTime": "2016-09-14 00:15:20",
                "seconds": "57.23",
                 "driverId": "0000000009"
            }]
} 

Which on load of the JSON will have to loop through and build a List of "dateTime" and "seconds" objects for the "selected" driver. This is what I didn't want to have to due but is seems all that is possible.