add optional list of members

29.md

@@ -183,3 +183,22 @@ The list of capabilities, as defined by this NIP, for now, is the following:
   ...
 }
 ```
+
+- *group members* (`kind:39002`) (optional)
+
+Similar to *group admins*, this event is supposed to be generated by relays that host the group.
+
+It's a NIP-51-like list of pubkeys that are members of the group. Relays might choose to not to publish this information or to restrict what pubkeys can fetch it.
+
+```json
+{
+  "kind": 39002,
+  "content": "list of members for the pizza lovers group",
+  "tags": [
+    ["d", "<group-id>"],
+    ["p", "<admin1>"],
+    ["p", "<member-pubkey1>"],
+    ["p", "<member-pubkey2>"],
+  ]
+}
+```