using System;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        var valid = @"{""body"":{ ""transactionDate"": ""2022-02-12T01:22:33+00:00"" }}";

        JsonConvert.DeserializeObject<Root>(valid).Dump();

        var invalid = @"{""body"":""{ ""transactionDate"": ""2022-02-12T01:22:33+00:00"" }""}";

        JsonConvert.DeserializeObject<Root>(invalid).Dump();

    }

}

​

public class Root

{

    public ConsumeWalletRequest body;

}

​

public partial class ConsumeWalletRequest

{

​

    [Newtonsoft.Json.JsonProperty("transactionDate", Required = Newtonsoft.Json.Required.Default, NullValueHandling = Newtonsoft.Json.NullValueHandling.Include)]

    public System.DateTimeOffset TransactionDate { get; set; }

​

}

​