final flow

src/api/promoApi.ts

@@ -109,6 +109,14 @@ export function clearGuestCookie(): Promise<unknown> {
     });
 }
 
+export function subscribeOnFinish(email: string): Promise<unknown> {
+    return requestWithRefresh(apiUrl('/api/promo/subscribe'), {
+        method: 'POST',
+        headers: jsonHeaders,
+        body: JSON.stringify({ email }),
+    });
+}
+
 const fallbackInitialData: InitialData = {
     cart: [],
     users: [],