aws_sqs_queue_policy.tpl

{
    "Id": "TSQueuePolicy",
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "Allow-TS-SendMessage",
            "Effect": "Allow",
            "Principal": "*",
            "Action": "sqs:SendMessage",
            "Resource": "*",
            "Condition": {
                "ArnEquals": {
                    "aws:SourceArn": "${sns_arn}"
                }
            }
        }
    ]
}