using System;

using System.Text.Json;

using System.Text.Json.Nodes;

public class Program

{

    public static void Main()

    {

        var json = @"{

           ""statusCode"": 200,

           ""result"": {

              ""generalInfo"": {

                 ""firstName"": ""Bobby"",

                 ""lastName"": ""Smith""

              },

              ""isError"": false      

           },

           ""sentDate"": ""2022-02-06T10:04:06.6853775Z""

        }";

        JsonNode data = JsonSerializer.Deserialize<JsonNode>(json);

        var statusCode = (int)data["statusCode"];

        var firstName = (string)data["result"]["generalInfo"]["firstName"];

        var lastName = data["result"]["generalInfo"]["lastName"].ToString();

        bool isErr = (bool)data["result"]["isError"];

​

        Console.WriteLine($"Status: {statusCode}, Name: {firstName} {lastName} isErr: {isErr}");

    }

}