### Is there an existing issue for this?

- [X] I have searched the existing issues and read the documentation

### Question

I'm trying to implement locally DLQ for SNS with SQS, the problem is, on localstack SQS DLQ message coming from SNS have different format than what you would expect in AWS

When I tested locally I received the message in the following format:

`"{\"Action\": [\"Publish\"], \"Message\": [\"(The original SNS message body here)\"], \"TopicArn\": [\"the topic arn in localstack\"], \"Version\": [\"2010-03-31\"]}"`

I'm using local stack 0.14.0 with docker-compose

my docker-compose file looks like this:


```
 aws:
    image: localstack/localstack:0.14.0
    restart: always
    volumes:
      - ./docker-mounts/localstack:/docker-entrypoint-initaws.d
    environment:
      - SERVICES=sqs,s3,ses,sns
      - DEFAULT_REGION=eu-west-1
      - HOSTNAME_EXTERNAL=aws.localtest.local
      - AWS_ACCESS_KEY_ID=foo
      - AWS_SECRET_ACCESS_KEY=bar
      - AWS_DEFAULT_REGION=eu-west-1
```

### Anything else?

_No response_
monkeypatch.setattr(config, "SQS_ENDPOINT_STRATEGY", "off")
        queue_name = f"queue-{short_uid()}"
        edge_url = config.get_edge_url()
        headers = aws_stack.mock_aws_request_headers("sqs")
        port = 12345
        hostname = "aws-local"
        url = f"{hostname}:{port}"
        headers["Host"] = url
        payload = f"Action=CreateQueue&QueueName={queue_name}"
        result = requests.post(edge_url, data=payload, headers=headers)
        assert result.status_code == 200
        assert url in result.text
        queue_url = f"http://{url}/{constants.TEST_AWS_ACCOUNT_ID}/{queue_name}"
        message_body = f"test message {short_uid()}"
        payload = f"Action=SendMessage&QueueUrl={queue_url}&MessageBody={message_body}"
        result = requests.post(edge_url, data=payload, headers=headers)
        assert result.status_code == 200
        assert "MD5" in result.text
        payload = f"Action=ReceiveMessage&QueueUrl={queue_url}&VisibilityTimeout=0"
        result = requests.post(edge_url, data=payload, headers=headers)
        assert result.status_code == 200
        assert message_body in result.text
        
        queue_url = f"http://127.0.0.1/{constants.TEST_AWS_ACCOUNT_ID}/{queue_name}"
        payload = f"Action=SendMessage&QueueUrl={queue_url}&MessageBody={message_body}"