diff --git a/native/components/farcaster-web-view.react.js b/native/components/farcaster-web-view.react.js
--- a/native/components/farcaster-web-view.react.js
+++ b/native/components/farcaster-web-view.react.js
@@ -32,7 +32,7 @@
       if (data.type === 'farcaster_url') {
         void Linking.openURL(data.url);
       } else if (data.type === 'farcaster_data') {
-        onSuccess(data.fid);
+        onSuccess(data.fid.toString());
       }
     },
     [onSuccess],