diff --git a/apps/bot/src/controllers/audienceChange.ts b/apps/bot/src/controllers/audienceChange.ts
new file mode 100644
index 0000000..85975b8
--- /dev/null
+++ b/apps/bot/src/controllers/audienceChange.ts
@@ -0,0 +1,17 @@
+import { AudienceChangeModel, IAudienceChange } from '../model/audienceChange';
+import { IUser } from '../model/user';
+import { ioc } from '../utils/ioc';
+import { log } from '../utils/log';
+
+export const audienceChangeSymbol = Symbol('audienceChange');
+
+export class AudienceChangeController {
+  public static register() {
+    ioc.set(audienceChangeSymbol, new AudienceChangeController());
+  }
+
+  public async add(change: IAudienceChange): Promise<void> {
+    log.db.info(`inserting audience change for chat ${change.channelId} ${change.status} ${change.user.id}`);
+    await AudienceChangeModel.create(change);
+  }
+}