def METHOD_NAME(self, subject_id, entities=None, check_not_on_or_after=True):
    """Get all the identity information that has been received and
    are still valid about the subject.
    :param subject_id: The identifier of the subject
    :param entities: The identifiers of the entities whoes assertions are
        interesting. If the list is empty all entities are interesting.
    :return: A 2-tuple consisting of the identity information (a
        dictionary of attributes and values) and the list of entities
        whoes information has timed out.
    """
    res = {}
    oldees = []
    if not entities:
        for item in self._cache.find({"subject_id": subject_id}):
            try:
                info = self._get_info(item, check_not_on_or_after)
            except TooOld:
                oldees.append(item["entity_id"])
                continue
            for key, vals in info["ava"].items():
                try:
                    tmp = set(res[key]).union(set(vals))
                    res[key] = list(tmp)
                except KeyError:
                    res[key] = vals
    else:
        for entity_id in entities:
            try:
                info = self.get(subject_id, entity_id, check_not_on_or_after)
            except TooOld:
                oldees.append(entity_id)
                continue
            for key, vals in info["ava"].items():
                try:
                    tmp = set(res[key]).union(set(vals))
                    res[key] = list(tmp)
                except KeyError:
                    res[key] = vals
    return res, oldees