diff --git a/lib/actions/client-db-store-actions.js b/lib/actions/client-db-store-actions.js
new file mode 100644
--- /dev/null
+++ b/lib/actions/client-db-store-actions.js
@@ -0,0 +1,5 @@
+// @flow
+
+const setClientDBStoreActionType = 'SET_CLIENT_DB_STORE';
+
+export { setClientDBStoreActionType };
diff --git a/lib/types/redux-types.js b/lib/types/redux-types.js
--- a/lib/types/redux-types.js
+++ b/lib/types/redux-types.js
@@ -556,6 +556,15 @@
       +type: 'SET_DRAFT_STORE_DRAFTS',
       +payload: $ReadOnlyArray<{ +key: string, +text: string }>,
     }
+  | {
+      +type: 'SET_CLIENT_DB_STORE',
+      +payload: {
+        +currentUserID: ?string,
+        +drafts: $ReadOnlyArray<{ +key: string, +text: string }>,
+        +messages: $ReadOnlyArray<ClientDBMessageInfo>,
+        +threadStore: ThreadStore,
+      },
+    }
   | {
       +type: 'UPDATE_ACTIVITY_STARTED',
       +payload?: void,