diff --git a/ts/index.ts b/ts/index.ts
index 5d8ce01..752e243 100644
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -3,3 +3,9 @@ export interface ITypedRequest {
   request: object;
   response: object;
 }
+
+export interface IBroadCastEvent<T> {
+  broadcastMessage: string;
+  uniqueEventId: string;
+  payload: T;
+}