validateActionSignature

validates a frame action message payload signature, @returns message, throws an Error on failure

page.tsx

import {
  getPreviousFrame,
  validateActionSignature,
} from "frames.js/next/server";
 
export default async function Home({
  searchParams,
}: {
  searchParams: Record<string, string>;
}) {
  const previousFrame = getPreviousFrame<State>(searchParams);
 
  const validMessage = await validateActionSignature(previousFrame.postBody);
 
  if(!validMessage) throw new Error('invalid message');
 
  console.log(validMessage?.data?.frameActionBody?.castId?.fid); // 1214
 
  // ...
})
```