code: function (hexString) {
      if (hexString.slice(0, 2) === '0x') {
        hexString = hexString.slice(2)
      }
      var integers = []
      for (var i = 0; i < hexString.length; i += 2) {
        integers.push(parseInt(hexString.slice(i, i + 2), 16))
      }
      return integers
    }
docs: Converts a hex string to an array of integers.