Fixed messages format

README.md

@@ -257,17 +257,16 @@ if __name__ == "__main__":
 
 ## Message Format
 
-Messages must conform to a specific JSON format:
+Messages should conform to a specific JSON format:
 
 ```json
 {
-  "service": "service_name",
-  "environment": "production",
-  "exception": "ErrorType",
-  "message": "Error message text",
-  "type": "error",
-  "datetime": "2024-01-01T12:00:00"
+  "id":"019f42ff-de59-7a17-8189-a36b68191a71",
+  "source":"019f42ff-dff9-7b68-832f-a6323a078105",
+  "type":"user.message",
+  "message":"Hello my friend, i'm there"
 }
+
 ```
 
 See `examples/` directory for sample messages.