diff --git a/52.md b/52.md
index 7cddfe11..9376e842 100644
--- a/52.md
+++ b/52.md
@@ -41,7 +41,7 @@ The list of tags are as follows:
   "pubkey": <32-bytes lowercase hex-encoded public key of the event creator>,
   "created_at": <Unix timestamp in seconds>,
   "kind": 31922,
-  "content": "",
+  "content": "<description of calendar event>",
   "tags": [
     ["d", "<UUID>"],
 
@@ -106,6 +106,8 @@ The list of tags are as follows:
     ["d", "<UUID>"],
 
     ["title", "<title of calendar event>"],
+    ["image", "<image url>"],
+    ["banner", "<image url>"],
 
     // Timestamps
     ["start", "<Unix timestamp in seconds>"],