diff --git a/1078.md b/1078.md
index 76de312..b9edcdb 100644
--- a/1078.md
+++ b/1078.md
@@ -7,6 +7,19 @@
 
 This NIP specifies the use of event kind `1078` which is almost identical to [30078](https://github.com/nostr-protocol/nips/blob/master/78.md) except that it's not a replacible event.
 
+### Format
+#### Private Configs
+Private config should be encrypted using Kind-4's algorithm and stored in `content`. Technically the plain text content can be in any format, but it's best to use a JSON format of the following shape
+```
+content: {
+  "client": "the client name, url for web client or NIP-89 identifier"
+  ... the rest can be whatever the client author decides to be.
+}
+```
+
+#### Public Configs
+Similar to [NIP-78](https://github.com/BlowaterNostr/nips/blob/master/78.md#nostr-event), configs should be stored in `tags` and can be anything.
+
 ## Some use cases
 The reason to not having a 30078 is that some clients want to implement local state changes as [CRDTs](https://crdt.tech/), meaning support cumulative and associative mutations