const writeContract = async (
    contractAddress: string,
    tokenAddress: string,
    contractABI: any,
    amount: string
  ) => {
    try {
      const ethersProvider = new ethers.BrowserProvider(provider as any);
      const signer = await ethersProvider.getSigner();
      const privateKey = await getPrivateKey();
      const wallet = new ethers.Wallet(privateKey, ethersProvider);
      const address = await signer.getAddress();
      const expiry = Math.floor(Date.now() / 1000) + 4200 ;

      const domain = {
        name: "Dai",
        version: '1',
        chainId: 11155111,
        verifyingContract: tokenAddress
      }
      const types = {
        Permit: [
          { name: "owner", type: "address" },
          { name: "spender", type: "address" },
          { name: "value", type: "uint256" },
          { name: "nonce", type: "uint256" },
          { name: "deadline", type: "uint256" },
        ],
      };
      const message = {
        owner: address,
        spender: contract,
        value: ethers.parseUnits(amount),
        nonce: 0,
        deadline: expiry,
      };
      const signature = await wallet.signTypedData(domain, types, message);
      return signature ;
    } catch (error: any) {
      return error as string;
    }
};