def get_unverified_header(token):
header, claims, signing_input, signature = _load(token)<EOL>return header<EOL>
Returns the decoded headers without verification of any kind.

    Args:
        token (str): A signed JWS to decode the headers from.

    Returns:
        dict: The dict representation of the token headers.

    Raises:
        JWSError: If there is an exception decoding the token.