Only use data when there is a dataWrapper.

apiclient/model.py

Index: apiclient/model.py 
=================================================================== 
--- a/apiclient/model.py 
+++ b/apiclient/model.py 
@@ -261,7 +261,7 @@ 
 
 def deserialize(self, content): 
 body = simplejson.loads(content) 
- if isinstance(body, dict) and 'data' in body: 
+ if self._data_wrapper and isinstance(body, dict) and 'data' in body: 
 body = body['data'] 
 return body