diff --git a/packages/core/src/lib/message.ts b/packages/core/src/lib/message.ts
index a8abde42..e50bebcf 100644
--- a/packages/core/src/lib/message.ts
+++ b/packages/core/src/lib/message.ts
@@ -27,6 +27,7 @@ export interface BaseMessage {
   channelId: number;
   createdTime: string;
   groupTag?: string;
+  nestedLevel?: number,
   reactions?: ReactionSummary[];
   repliesCount?: number;
   properties: unknown;