diff --git a/design/new-manifest/README.md b/design/new-manifest/README.md
index 455e814..d9c4f1a 100644
--- a/design/new-manifest/README.md
+++ b/design/new-manifest/README.md
@@ -52,4 +52,10 @@ objects:
       value:
     date: # why does Merritt care?
     authentication-method-id: # if different from the default
+metadata-replacement
+- primary-id:
+  local-id:
+  erc-who:
+  erc-what:
+  erc-when:
 ```