dynamo-parser-sugestion.cs

public static object GetValue(AttributeValue value) => GetString(value);

private static object GetString(AttributeValue value) => !string.IsNullOrEmpty(value.S) ? value.S : GetNumber(value);

private static object GetNumber(AttributeValue value) => !string.IsNullOrEmpty(value.N) ? value.N : GetObject(value);

private static object GetObject(AttributeValue value)
{
    if (value?.M?.Count > 0)
    {
        var properties = new List<JProperty>();
        foreach (var keyValueData in value.M)
            properties.Add(GetKeyValue(keyValueData));

        return new JObject(properties);
    }

    return GetList(value);
}

private static object GetList(AttributeValue value)
{
    if (value?.L?.Count > 0)
    {
        var listObj = new List<object>();
        foreach (var item in value.L)
            listObj.Add(GetValue(item));

        return listObj;
    }

    return null;
}