JwtSecurityToken.EncodedPayload is having problems with my Deserialized JSON to plain object

This is a “It used to work” issue. I have attached the code that shows the issue. I want to be able to Deserialize a JSON into an object that I can add correctly to a JwtPayload and get properly encoded by the JwtSecurityToken.

I can add a object to the payload.

var custom = new Custom{}
payload.Add("custom", custom);

I can add a dynamic to the payload.

dynamic ccDynamic = new
            {
                a="b",
                b=2,
                id_token_signing_alg_values_supported = new List<string>{
                        "RS256"
                },
                d = new { 
                  name  = "bob"
                }
            };
payload.Add("ccDynamic", ccDynamic);

I can add an expando to the payload.

var converter = new ExpandoObjectConverter();
dynamic expando = JsonConvert.DeserializeObject<ExpandoObject>(json, converter);
payload.Add("expando", expando);

And these get encoded just fine in the final JWT.

I used to be able to deserialize a json to a dynamic or object and add that.

   var json = JsonConvert.SerializeObject(custom);
    var jObj = JsonConvert.DeserializeObject(json);
    dynamic jDynamic = JsonConvert.DeserializeObject<dynamic>(json);
    payload.Add("object", jObj);
    payload.Add("jDynamic", jDynamic);

However those Deserialized object now turn into the following. JWT

{
  "nbf": 1592932718,
  "exp": 1592934518,
  "iat": 1592932718,
  "iss": "https://issuer.com/token",
  "aud": "my-audience",
  "object": {
    "Name": [],
    "Numbers": [
      [],
      [],
      []
    ],
    "Strings": [
      [],
      [],
      []
    ],
    "SomeObjects": [
      {
        "Name": []
      },
      {
        "Name": []
      }
    ],
    "SomeObject": {
      "Name": []
    }
  },
  "jDynamic": {
    "Name": [],
    "Numbers": [
      [],
      [],
      []
    ],
    "Strings": [
      [],
      [],
      []
    ],
    "SomeObjects": [
      {
        "Name": []
      },
      {
        "Name": []
      }
    ],
    "SomeObject": {
      "Name": []
    }
  },
  "ccDynamic": {
    "a": "b",
    "b": 2,
    "id_token_signing_alg_values_supported": [
      "RS256"
    ],
    "d": {
      "name": "bob"
    }
  },
  "custom": {
    "Name": "Bugs Bunny",
    "Numbers": [
      1,
      2,
      3
    ],
    "Strings": [
      "a",
      "bb",
      "ccc"
    ],
    "SomeObjects": [
      {
        "Name": "Daisy Duck"
      },
      {
        "Name": "Porky Pig"
      }
    ],
    "SomeObject": {
      "Name": "Daffy Duck"
    }
  },
  "expando": {
    "Name": "Bugs Bunny",
    "Numbers": [
      1,
      2,
      3
    ],
    "Strings": [
      "a",
      "bb",
      "ccc"
    ],
    "SomeObjects": [
      {
        "Name": "Daisy Duck"
      },
      {
        "Name": "Porky Pig"
      }
    ],
    "SomeObject": {
      "Name": "Daffy Duck"
    }
  }
}

CustomPayloadJwt.zip

[brentschmaltz]

@ghstahl we have an internal version of Newtonsoft, i haven’t found the exact issue, but I believe the two are out of sync.

To test this out, I added the following code and this seems to have things in sync and everything seems right. You could use this workaround while we figure out what to do.

JsonExtensions.Serializer = JsonConvert.SerializeObject;
JsonExtensions.Deserializer = JsonConvert.DeserializeObject;

eyJhbGciOiJFUzI1NiIsImtpZCI6IjEyMzQiLCJ0eXAiOiJKV1QifQ.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.BLAH

{ “nbf”: 1592956983, “exp”: 1592958783, “iat”: 1592956983, “iss”: “https://issuer.com/token”, “aud”: “my-audience”, “object”: { “Name”: “Bugs Bunny”, “Numbers”: [ 1, 2, 3 ], “Strings”: [ “a”, “bb”, “ccc” ], “SomeObjects”: [ { “Name”: “Daisy Duck” }, { “Name”: “Porky Pig” } ], “SomeObject”: { “Name”: “Daffy Duck” } }, “jDynamic”: { “Name”: “Bugs Bunny”, “Numbers”: [ 1, 2, 3 ], “Strings”: [ “a”, “bb”, “ccc” ], “SomeObjects”: [ { “Name”: “Daisy Duck” }, { “Name”: “Porky Pig” } ], “SomeObject”: { “Name”: “Daffy Duck” } }, “ccDynamic”: { “a”: “b”, “b”: 2, “id_token_signing_alg_values_supported”: [ “RS256” ], “d”: { “name”: “bob” } }, “custom”: { “Name”: “Bugs Bunny”, “Numbers”: [ 1, 2, 3 ], “Strings”: [ “a”, “bb”, “ccc” ], “SomeObjects”: [ { “Name”: “Daisy Duck” }, { “Name”: “Porky Pig” } ], “SomeObject”: { “Name”: “Daffy Duck” } }, “expando”: { “Name”: “Bugs Bunny”, “Numbers”: [ 1, 2, 3 ], “Strings”: [ “a”, “bb”, “ccc” ], “SomeObjects”: [ { “Name”: “Daisy Duck” }, { “Name”: “Porky Pig” } ], “SomeObject”: { “Name”: “Daffy Duck” } } }

[brentschmaltz]

@ghstahl that helps thanks. I think I have an idea now.