resources/Docs/DOCS.md

@@ -26,11 +26,15 @@ Packets can also have JSON as a payload:
 
 Sent by the server to the client as soon as possible after they connect to the gateway.
 
-This payload contains a `pingInterval` property. Every *pingInterval*, the client must send a packet simply containing `7@1`. This is the ACTION_PING payload. If the client does not send this payload at the right time, it is disconnected.
+JSON data format:   
+| Field | Description |
+| - | - |
+| pingInterval | Every *pingInterval*, the client must send a packet simply containing `7@1`. This is the ACTION_PING payload. If the client does not send this payload at the right time, it is disconnected. |
+| supportedAttributes | An array of attributes supported by the server. If a client requests an unsupported attribute, it is disconnected from the server. |
 
 Example:
 ```json
-0@{"pingInterval":14750}
+0@{"pingInterval":14750,"supportedAttributes":["PRESENCE_UPDATES"]}
 ```
 
 ## 1:YOO
@@ -194,7 +198,7 @@ Voice server signaling is done through a websocket gateway. This gateway is spec
 | content | The text content of the message (max 2000 characters, min 1 character, trimmed) |
 | channel | A [message channel object](#message-channel-object) |
 | author | A [message author object](#message-author-object) |
-| _id | A UUIDv4 |
+| _id | An ObjectId |
 
 ## Message channel object