In NEO/go protocol, we describe some parameters that can
be send via NEO packages with structures. On the wire all of
these structures are encoded as msgpack arrays [1]. Msgpack
arrays can have 1 or more bytes as a header [2]. Therefore
it's better to use "ReadArrayHeaderBytes" than using

  >>> data = data[1:]

which fails in case we have array with 3 or 5 header bytes.

[1] One could also declare a protocol where these parameters aren't
    send as msgpack arrays but as msgpack maps. See here for the
    msgpack map specification:

    https://github.com/msgpack/msgpack/blob/9aa092d6ca81/spec.md?plain=1#L338

[2] https://github.com/msgpack/msgpack/blob/9aa092d6ca81/spec.md?plain=1#L315