### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

Sending a message with body:
`"&quot;&quot;"`
is received on the consumer side with body:
`""""`

### Expected Behavior

Sending a message with body:
"&quot;&quot;"
is received on the consumer side with body:
"&quot;&quot;"

### How are you starting LocalStack?

Custom (please describe below)

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

Running localstack in docker desktop on Mac using helm chart

https://localstack.github.io/helm-charts
version 0.3.7
Image version: 0.14.3

#### Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)



### Environment

```markdown
- OS: macOS Monterey
- LocalStack: 0.14.3
```


### Anything else?

_No response_
ponseSerializer, "s3": S3ResponseSerializer}
    protocol_specific_serializers = {
        "query": QueryResponseSerializer,
        "json": JSONResponseSerializer,
        "rest-json": RestJSONResponseSerializer,
        "rest-xml": RestXMLResponseSerializer,
        "ec2": EC2ResponseSerializer,
    }
    # Try to select a service-specific serializer implementation
    if service.service_name in service_specific_serializers:
        return service_specific_serializers[service.service_name]()
    else:
        # Otherwise, pick the protocol-specific serializer for the protocol of the service
        return protocol_specific_serializers[service.protocol]()
def aws_response_serializer(service: str, operation: str):
    """
    A decorator for an HTTP route that can serialize return values or exceptions into AWS responses.
    This can be used to create AWS request handlers in a convenient way. Example usage::
        from localstack.http import route, Request
        from localstack.aws.api.sqs import ListQueuesResult
        @route("/_aws/sqs/queues")
        @aws_response_serializer("sqs", "ListQueues")
        def my_route(request: Request):
            if some_condition_on_request:
                raise CommonServiceError("...")  # <- will be serialized into an error response
            return ListQueuesResult(QueueUrls=...)  # <- object from the SQS API will be serialized
    :param service: the AWS service (e.g., "sqs", "lambda")
    :param operation: the operation name (e.g., "ReceiveMessage", "ListFunctions")
    :returns: a decorator
    """
    def _decorate(fn):
        service_model = load_service(service)
        operation_model = service_model.operation_model(operation)
        serializer = create_serializer(service_model)
        def _proxy(*args, **kwargs) -> WerkzeugResponse:
            # extract request from function invocation (decorator can be used for methods as well as for functions).
            if len(args) > 0 and isinstance(args[0], Werkze