=== modified file 'oneconf/networksync/infraclient_pristine.py'
--- oneconf/networksync/infraclient_pristine.py	2015-05-05 17:55:22 +0000
+++ oneconf/networksync/infraclient_pristine.py	2016-02-14 19:24:02 +0000
@@ -102,3 +102,10 @@
 
         data_content = {"package_list": package_list, "packages_checksum": packages_checksum}
         return self._post('packages/%s/' % machine_uuid, data=data_content, content_type='application/json', scheme=AUTHENTICATED_API_SCHEME)
+
+    def _prepare_body(self, data=None, content_type=None):
+        body = super(WebCatalogAPI, self)._prepare_body(
+            self, data=data, content_type=content_type)
+        if body is None:
+            return None
+        return body.encode('utf-8')