diff --git a/lib/utils/conversion-utils.js b/lib/utils/conversion-utils.js
--- a/lib/utils/conversion-utils.js
+++ b/lib/utils/conversion-utils.js
@@ -134,6 +134,10 @@
     const result: { [string]: mixed } = {};
     for (const key in input) {
       const innerValidator = recastValidator.meta.props[key];
+      if (!innerValidator && recastValidator.meta.strict === false) {
+        result[key] = input[key];
+        continue;
+      }
       result[key] = convertObject(
         innerValidator,
         input[key],
diff --git a/lib/utils/conversion-utils.test.js b/lib/utils/conversion-utils.test.js
--- a/lib/utils/conversion-utils.test.js
+++ b/lib/utils/conversion-utils.test.js
@@ -5,12 +5,14 @@
 
 import {
   extractUserIDsFromPayload,
+  extractFarcasterIDsFromPayload,
   convertServerIDsToClientIDs,
   convertClientIDsToServerIDs,
   convertBytesToObj,
   convertObjToBytes,
 } from './conversion-utils.js';
 import { tShape, tID, idSchemaRegex } from './validation-utils.js';
+import { farcasterMessageValidator } from '../shared/farcaster/farcaster-messages-types.js';
 import { fetchMessageInfosResponseValidator } from '../types/validators/message-validators.js';
 
 type ComplexType = { +ids: { +[string]: $ReadOnlyArray<string> } };
@@ -122,6 +124,43 @@
   });
 });
 
+describe('extractFarcasterIDsFromPayload', () => {
+  it('should extract all Farcaster IDs from payload', () => {
+    const payload = {
+      conversationId: '4282-7811',
+      hasMention: false,
+      isDeleted: false,
+      isPinned: false,
+      isProgrammatic: false,
+      mentions: [],
+      message:
+        'thanks again for helping test, your report was super helpful to getting the problem solved :)',
+      messageId: '08ac07f52d1c2ad9759ffea13edd695b',
+      reactions: [],
+      senderContext: {
+        displayName: 'Ashoat',
+        fid: 7811,
+        pfp: {
+          url: 'https://i.imgur.com/ToR9Mqd.jpg',
+          verified: false,
+        },
+        username: 'ashoat.eth',
+      },
+      senderFid: 7811,
+      serverTimestamp: 1761148247480,
+      type: 'text',
+      viewerContext: {
+        focused: false,
+        isLastReadMessage: false,
+        reactions: [],
+      },
+    };
+    expect(
+      extractFarcasterIDsFromPayload(farcasterMessageValidator, payload),
+    ).toEqual([7811]);
+  });
+});
+
 describe('convertObjToBytes and convertBytesToObj', () => {
   it('should convert object to byte array and back', () => {
     const obj = { hello: 'world', foo: 'bar', a: 2, b: false };