Parse byte as byte, not string

I receive some JSON from a Java third-party system that contains Avro schemas in JSON format. An example looks like this:

{"type":"record", "name":"AvroRecord", "namespace":"Parent.Namespace", "fields": [{"name":"AvroField", "type":"bytes", "default":"\u00FF"}]}

I parse this JSON to do some C# code generation. The result would look like this:

public partial class AvroRecord
{
    [AvroField(Name = "AvroField", Type = "bytes", DefaultValueText = "ÿ")]
    public byte[] AvroField { get; set; }

    public AvroRecord() {  this.AvroField = new byte[] { 255 }; }
}

Eventually, from the C# representation of the schema, I need to infer back the original schema. Once I get that inferred schema, it will be sent over to the original system for comparison. That is why I want to keep the original string value for the default value, since I don't know if:

{"type":"record", "name":"AvroRecord", "namespace":"Parent.Namespace", "fields": [{"name":"AvroField", "type":"bytes", "default":"\u00FF"}]}

and

{"type":"record", "name":"AvroRecord", "namespace":"Parent.Namespace", "fields": [{"name":"AvroField", "type":"bytes", "default":"ÿ"}]}

will result in an exact match or it will have a problem.

I use JSON.NET to convert from the raw schema as a string to something more useful that I can work with:

JToken token = JToken.Parse(schema);

Is there a way in JSON.NET or any other JSON parsing library to control the parsing and copy a value without being parsed? Basically, a way to avoid "\u00FF" becoming "ÿ"