Update data_dictionary.md

data_dictionary.md

@@ -31,16 +31,19 @@ The Activity Stream addon sends two distinct types of pings to the backend (HTTP
 
 ```json
 {
+  
+  "source";  "top sites, or bookamrks, or..."
+  "action_position": 3,
+  "event": "click or scroll or search or delete",
+  "page": "newtab or timeline",
   "action": "activity_stream_event",
-  "action_position": 4,
   "addon_version": "1.0.0",
   "client_id": "374dc4d8-0cb2-4ac5-a3cf-c5a9bc3c602e",
-  "date": "2016-03-07",
-  "event": "delete",
-  "ip": "10.192.171.13",
   "locale": "en-US",
-  "source": "top_sites",
   "tab_id": "1-3",
+  // server side fields
+  "date": "2016-03-07",
+  "ip": "10.192.171.13",
   "timestamp": 1457396660000,
   "ua": "python-requests/2.9.1",
 }