// @nuget: Newtonsoft.Json

using System;

public class Program

{

    public class DataReading

{

    public string uuid { get; set; }

    public double[][] readings { get; set; }

}

    public static void Main()

    {

        string jsonString = "[{\"uuid\": \"3c24a849-3355-5b28-bf83-1e93c36eea75\", \"Readings\": [[1541524171000.0, 22.700000762939453], [1541531370000.0, 22.600000381469727], [1541577227000.0, 21.700000762939453], [1541578016000.0, 21.899999618530273], [1541578322000.0, 22.100000381469727], [1541580122000.0, 22.0]]}]";

        var result = Newtonsoft.Json.JsonConvert.DeserializeObject<DataReading[]>(jsonString);

        Console.WriteLine("Done!");

    }

}