message: Fix: ether signer `transformData` types
diff: @@ -28,7 +28,7 @@ const transformData = (data: BigNumberish): string => {
  if (data instanceof BigNumber) {
  return data.toHexString();
  }
  - return Buffer.from(data).toString('hex');
  + return Buffer.from(data as Array<number>).toString('hex');
  };
  /**
  