how to print a string containing utf8 code read from file

Question

I have a file which contains UTF-8 encoded text:

b\'\\xd8\\xa3\\xd9\\x8a \\xd8\\xb9\\xd9\\x84\\xd9\\x85 \\xd9\\x87\\xd8\\xb0\\xd8\\xa7 \\xd8\\xa7\\xd9\\x84\\x