Unity MessagePackを使う C#

Webから戻ってきたMessagePackの展開

        yield return www;
        if (www.error == null)
        {
            try
            {
                var serializer = MessagePackSerializer.Create<Dictionary<string, MessagePackObject>> ();
                var unpackDict = serializer.UnpackSingleObject (www.bytes);

                foreach (var key in unpackDict.Keys)
                {
                    Debug.Log (key);
                    Debug.Log (unpackDict[key].ToObject());
                }
            }
            catch (Exception e)
            {
                Debug.LogError (e);
                returnData (null);
            }
        }