namespace Service.AzureDevops
{
    public class Fields
    {
        [JsonPropertyName("System.Title")]
        public string Title { get; set; }
        [JsonPropertyName("System.Description")]
        public string Description { get; set; }
    }
    public class Value
    {
        [JsonPropertyName("id")]
        public int ID { get; set; }
        [JsonPropertyName("fields")]
        public Fields Fields { get; set; }
        [JsonPropertyName("url")]
        public string Url { get; set; }
    }
    public class RootWorkItems  
    {
        [JsonPropertyName("value")]
        public List<Value> Value { get; set; }
    }
}

namespace Service.AzureDevops
{
    public class Fields
    {
        [JsonPropertyName("System.Title")]
        public string Title { get; set; }
        [JsonPropertyName("System.Description")]
        public string Description { get; set; }
    }
    public class Value
    {
        [JsonPropertyName("id")]
        public int ID { get; set; }
        [JsonPropertyName("fields")]
        public Fields Fields { get; set; }
        [JsonPropertyName("url")]
        public string Url { get; set; }
    }
    public class RootWorkItems  
    {
        [JsonPropertyName("value")]
        public List<Value> Value { get; set; }
    }
}

lRootWorkItems = JsonConvert.DeserializeObject<RootWorkItems>(lResponseBody);

lRootWorkItems = JsonConvert.DeserializeObject<RootWorkItems>(lResponseBody);