### 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_
call_moto(context)
    def create_platform_application(
        self, context: RequestContext, name: String, platform: String, attributes: MapStringToString
    ) -> CreatePlatformApplicationResponse:
        moto_response = call_moto(context)
        return CreatePlatformApplicationResponse(**moto_response)
    def create_platform_endpoint(
        self,
        context: RequestContext,
        platform_application_arn: String,
        token: String,
        custom_user_data: String = None,
        attributes: MapStringToString = None,
    ) -> CreateEndpointResponse:
        result = None
        try:
            result = call_moto(context)
        except DuplicateSnsEndpointError:
            
            for e in self.platform_endpoints.values():
                if e.token == token:
                    if custom_user_data and custom_user_data != e.custom_user_data:
                        
                        raise DuplicateSnsEndpointError(
                            f"Endpoint already exist for token: {token} with different attributes"
                        )
        return CreateEndpointResponse(**result)
    def unsubscribe(self, context: RequestContext, subscription_arn: subscriptionARN) -> None: