diff --git a/101.md b/101.md
index d2a05406..fb83a255 100644
--- a/101.md
+++ b/101.md
@@ -51,7 +51,7 @@ In the content field, <encrypted_text> would be a JSON string:
 { 
   "p":"A's real pubkey", 
   "content":"your content",  
-  "sig":"<signature of the event id, generated with A's real private key>" 
+  "sig":"<signature of the sha256 hash of the data: [eventCreateTime, p, content], generated with A's real private key>" 
 }
 ```