What you can do is using another deserializer than what Unity3D provides.

I hope you can get the result from the reserver as pure text, then you can feed it into a library like MiniJSON, instead of working with objects, you are given a dictionary with <string, object>. It has some advantages, like supporting more character in keys, for example:
 

{
   "this#would_not_work_in_unity_deserialiser": "But it works fine with MiniJSON"
}

However, the syntax ond access and update gets a bit uglier, also having all JSON as objects makes it more easy to see the format, just having a dictionary with anything with it is bit harder to debug. No big issue thou.

I have been using MiniJSON successfully myself. Here is a link to what I believe is its official github:

https://gist.github.com/darktable/1411710 

I went and made my own parser, it works fine so far, so I'll be using that, but thanks for the answers, it's going to come in handy later.