def _get_redshift_cluster_arn(event: dict) -> str:
    """ Get ARN of Redshift cluster """

    account_id = event['userIdentity']['accountId']
    region = event['awsRegion']
    cluster_identifier = event['responseElements']['clusterIdentifier']

    return f"arn:aws:redshift:{region}:{account_id}:cluster:{cluster_identifier}"