using System;

using System.Collections.Generic;

​

using System.Linq;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        string json = @"{

            ""data"":{

                ""ProfileContext"": {

                    ""candidateId"": ""e8dc40c5-abff-eb11-94ef-000d3a339ed8"",

                    ""candidateName"": ""Christabelle Dingcong"",

                    ""dateOfBirth"": ""1983-10-27T00:00:00Z"",

                    ""email"": ""carabuene@gmail.com"",

                    ""mobilePhone"": ""(416) 831 - 7388"",

                    ""contactSsn"": ""730763906"",

                    ""birthDate"": ""1983-10-27T00:00:00Z"",

                    ""age"": ""30""

                }

            }

        }";

​

        // Create the JObject

        var obj = JObject.Parse(json);

        // Get the root property as an object

        var dataObj = (JObject)obj.Property("data").Value;

        // Get the root's child property as an object

        var profileContext = (JObject)dataObj.Property("ProfileContext").Value;

        // Check to see if the object contains the property we're looking for.

        // If so, update the value which will update the referenced property on obj

        if (profileContext.ContainsKey("contactSsn")) {

            var ssn = profileContext.Property("contactSsn");

            Console.WriteLine($"SSN: {ssn.Value}");

            // Setting the value here will change the SSN value

            ssn.Value = "NO SSN";

        }

        else {

            Console.WriteLine("No SSN");

        }

        // Serialized back to a string with new value

        var output = JsonConvert.SerializeObject(obj);

        Console.WriteLine(output);

​

    }

}