### 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_
queue_url = sqs_create_queue()
        
        tags = {"MyTag": "value1", "mytag": "value2"}
        aws_client.sqs.tag_queue(QueueUrl=queue_url, Tags=tags)
        response = aws_client.sqs.list_queue_tags(QueueUrl=queue_url)
        assert response["Tags"] == tags
    @pytest.mark.aws_validated
    def test_untag_queue_ignores_non_existing_tag(self, sqs_create_queue, aws_client):
        queue_url = sqs_create_queue()
        
        tags = {"tag1": "value1", "tag2": "value2"}
        aws_client.sqs.tag_queue(QueueUrl=queue_url, Tags=tags)
        
        aws_client.sqs.untag_queue(QueueUrl=queue_url, TagKeys=["tag1", "tag3"])
        response = aws_client.sqs.list_queue_tags(QueueUrl=queue_url)
        assert response["Tags"] == {"tag2": "value2"}
    @pytest.mark.aws_validated
    def test_tag_queue_overwrites_existing_tag(self, sqs_create_queue, aws_client):