bucket-policy.json

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam::<ACCOUNT_ID>:user/<USER_ID>"
            },
            "Action": "s3:ListBucket",
            "Resource": "arn:aws:s3:::<BUCKET_NAME>"
        },
        {
            "Effect": "Allow",
            "Principal": {
                "AWS": "arn:aws:iam::<ACCOUNT_ID>:user/<USER_ID>"
            },
            "Action": "s3:GetObject",
            "Resource": "arn:aws:s3:::<BUCKET_NAME>/*"
        }
    ]
}