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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def json_safe(string, content_type='application/octet-stream'):
 """Returns JSON-safe version of `string`. If `string` is a Unicode string or a valid UTF-8, it is returned unmodified, as it can safely be encoded to JSON string. If `string` contains raw/binary data, it is Base64-encoded, formatted and returned according to "data" URL scheme (RFC2397). Since JSON is not suitable for binary data, some additional encoding was necessary; "data" URL scheme was chosen for its simplicity. """

    try:
        string = string.decode('utf-8')
        json.dumps(string)
        return string
    except (ValueError, TypeError):
        return b''.join([
            b'data:',
            content_type.encode('utf-8'),
            b';base64,',
            base64.b64encode(string)
        ]).decode('utf-8')