Fargate ECS with ALB describe listener

describe-listeners.json

{
    "Listeners": [
        {
            "Protocol": "HTTP",
            "DefaultActions": [
                {
                    "TargetGroupArn": "arn:aws:elasticloadbalancing:::targetgroup/fargate-target/",
                    "Type": "forward"
                }
            ],
            "LoadBalancerArn": "arn:aws:elasticloadbalancing::loadbalancer/app/fargate-elb/",
            "Port": 80,
            "ListenerArn": "arn:aws:elasticloadbalancing:::listener/app/fargate-elb//"
        }
    ]
}