Just don't name your objects that are deserialized or unserialized with "JSON" as part of the name.. they're an object, plain and simple...
If they hold a higher level abstraction (Json.Net object, or similar), or hold a string that is Json, go ahead and have it as part of the name... It just bugs me when I see things like:
var jsonData = JSON.parse(somestring);
If this is JavaScript, "jsonData" isn't JSON, it's an object.