Control Deserializing Json Properties via Attributes?

Question

I have json that is returned similar to:

{
  "access_token" : "....",
  "token_type" : "....",
  "expires_in" : "...."
}

I have a class that I want to deserialize this into, but the fields are:

public string AccessToken { get; set; }
public string TokenType { get; set; }
public int ExpiresIn { get; set; }

I have attempted DataMember(Name="access_token") and the like for the 3 properties, but any time I have attempted to bind to it, it fails (int is 0, strings are null). The only way I've been able to get it to work is a bit... wordy:

var test = JObject.Parse(result);
var test2 = new AuthorizeToken() {
  AccessToken = test["access_token"].ToString(),
  ExpiresIn = Convert.ToInt32(test["expires_in"]),
  TokenType = test["token_type"].ToString()
};

When I do this, test2 is populated appropriately, but I'd prefer do some type of

Deserialize<AuthorizeToken>(result); 

with Json.NET