onRun.js

return (async () => {
  const relay = new GelatoRelay();

  const account = privateKeyToAccount('0x215816ad5bfd524e13dc8b6b2ed2674d8f8973f403ad80909111dfe3757bc9d6');
  const client = createWalletClient({
    account,
    transport: http(
      'https://arb-sepolia.g.alchemy.com/v2/MVGOoAkMUxl6jrN3qLaSt7Z9dDB7iLUU', // RPC URL of the network where themint method is to be called
    ),
  });

  const publicClient = createPublicClient({
    transport: http(
      'https://opt-sepolia.g.alchemy.com/v2/hL0i6G6Rrp5GgKc_pa5JvezbgDLloVgz', // RPC URL of the network where the burn event is to be fetched
    ),
  });

  const { log } = context;
  const { transactionHash } = log;
  const receipt = await publicClient.getTransactionReceipt({
    hash: transactionHash,
  });

  const { logs } = receipt;
  let amount = BigInt(0);
  for (const eventLog of logs) {
    if (
      eventLog.topics[0] ===
      '0xcc16f5dbb4873280815c1ee09dbd06736cffcc184412cf7a71a0fdb75d397ca5' // topic id of burn event
    ) {
      const burnEvent = decodeEventLog({
        abi: ERC_20_TOKEN_ABI,
        topics: eventLog.topics,
        data: eventLog.data,
      });

      const { args } = burnEvent;

      amount = args.amount;
      sender = args.sender;
    }
  }

  //encode function data
  const data = encodeFunctionData({
    abi: ERC_20_TOKEN_ABI,
    functionName: 'mint',
    args: [sender, amount],
  });

  const relayRequest = {
    user: account.address,
    chainId: BigInt(421614), 
    target: '0xbaedb2a4eb22e05c01c677a4a9e973909599648b', // token address
    data,
  };

  const response = await relay.sponsoredCallERC2771(
    relayRequest,
    client,
    'Yzrtu5XgInRoLytEbSjWNkwnPpZbyssXTdIZBlty2zU_',
  );
  return response.taskId;
})();