diff --git a/README.md b/README.md
index 4f04834..4a7ba89 100644
--- a/README.md
+++ b/README.md
@@ -232,4 +232,22 @@ status 404
     productId: number
   }
 }
-```
\ No newline at end of file
+```
+## Product
+```
+{
+  name: string,
+  description: string,
+  price: number
+  userId: string
+}
+```
+## Cart
+```
+{
+  userId: string,
+  products: {
+    productId: number (quantity)
+  },
+}
+```