{
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam::XXXXXXXXXXX:role/USERID"
            },
            "Action": "s3:ListBucket",
            "Resource": "arn:aws:s3:::BUCKETNAME",
            "Condition": {
                "StringLike": {
                    "s3:prefix": "folder1/folder2/"
                }
            }
        },