def splitChunkAndSignature(chunk):
	"""Simple wrapper method to separate the signature from the rest of the chunk.
	
	Arguments:
		chunk {bytes} -- Everything inside the message field of an IOTA tx.
	
	Returns:
		bytes -- Everything except the trailing 64 bytes.
		bytes -- 64 bytes long signature.
	"""

	signature = chunk[-64:]
	data = chunk[0:-64]
	
	return data, signature