using System;

using System.Collections.Generic;

using Newtonsoft.Json;

​

public class Program

{   

    public static void Main()           

    {

        var json = @"{

            ""objList"": [

                [8.8, 4],

                [9.2, 1.45],

                [1.61, 32.79]

            ]

        }";

        var obj = JsonConvert.DeserializeObject<MyObjList>(json);       

        obj.Dump();

    }

}

​

public class MyObjList {

    // DataMember(Name = "objList")] // doesn't work on dotnetfiddle :(

    [JsonProperty("objList")]   

    public List<MyObj> ObjList { get; set; }

}

​

[JsonConverter(typeof(MyObjConverter))]

public class MyObj{

    public double FirstDouble{ get; set; }

    public double SecondDouble { get; set; }

}

​

public class MyObjConverter : JsonConverter

{

    public override bool CanWrite { get { return false; } }

    public override bool CanConvert(Type objectType)

    {

        return objectType == typeof(MyObj);     

    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)

    {               

        var doubles = serializer.Deserialize<List<double>>(reader);

        return new MyObj { FirstDouble = doubles[0], SecondDouble = doubles[1] };                       

    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)

    {

        throw new NotImplementedException();

    }

}