Different format JSON deserializing to object

Question

I have a memory stream of data I have received from Poloniex's API. https://docs.poloniex.com/#ticker-data

The data in the API looks in the format below:

[
    1002,
    null,
    [
        149,
        "382.98901522",
        "381.99755898",
        "379.41296309",
        "-0.04312950",
        "14969820.94951828",
        "38859.58435407",
        0,
        "412.25844455",
        "364.56122072",
        0,
        0
    ]
]

I can see that this is valid json on https://jsonlint.com/

My end goal is I want to deserialize this into an object in C# which I can send elsewhere.

I've never seen JSON like this before and unsure how I would deserialize this structure into my own model. I'm used to see JSON as keyvaluepairs

I've deserialized into a JArray and going from there but I'm unsure of the best approach.

var deserialized = 
    (JArray)_serializer.Deserialize(new JsonTextReader(new StreamReader(stream)) 
    { 
        CloseInput = false 
    });

What would be the best way to do this?

Example model structure to deserialize into:

public class PoloniexResponseDataRoot
    {
        public List<PoloniexResponseDataParent> Children { get; set; }
    }

    public class PoloniexResponseDataParent
    {
        public int ChannelNumber { get; set; }
        public int? OtherNumber { get; set; }
        public List<PoloniexResponseDataChild> Children { get; set; }

    }

    public class PoloniexResponseDataChild
    {
        public object Data { get; set; }
    }

Thanks

Answer 1

If your structure is as simple as the one in your example and that the first 2 numbers always represent ChannelNumber and OtherNumber followed by 1 level array, then you can do something like this:

private static PoloniexResponseDataParent Parse(JArray objects)
{
    var parent = new PoloniexResponseDataParent();
    var channelNumber = objects[0];
    var otherNumber = objects[1];
    var children = objects[2];
    parent.ChannelNumber = Convert.ToInt32(channelNumber);
    parent.OtherNumber = (otherNumber as JValue).Value<int?>();
    parent.Children = children.Select(item => new PoloniexResponseDataChild
    {
        Data = item switch
        {
            JValue jValue => jValue.Value,
            _ => throw new ArgumentOutOfRangeException(nameof(item))
        }
    }).ToList();
    return parent;
}



var jArray = Newtonsoft.Json.JsonConvert.DeserializeObject<JArray>(jsonStr);

var parent = Parse(jArray);