### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When starting the transcription job in response job object is null:

<img width="1154" alt="Screenshot 2023-04-03 at 09 21 09" src="https://user-images.githubusercontent.com/454412/229447066-1671f811-da49-478d-bf24-252f30b17699.png">


### Expected Behavior

Response from the real AWS stack - job object is not null

<img width="1161" alt="Screenshot 2023-04-03 at 09 30 13" src="https://user-images.githubusercontent.com/454412/229441498-06125248-3b68-4679-8204-0163e8245db6.png">


### How are you starting LocalStack?

Custom (please describe below)

### Steps To Reproduce

Using test containers, reproducing project can be found here:

https://github.com/kkocel/local-stack-transcribe-repro

### Environment

```markdown
- OS: macOS
- LocalStack: latest
```


### Anything else?

_No response_
def wait_for_topic_delete(topic_arn: str) -> None:
        def wait():
            try:
                sns_client.get_topic_attributes(TopicArn=topic_arn)
                return False
            except Exception as e:
                if "NotFound" in e.response["Error"]["Code"]:
                    return True
                raise
        poll_condition(wait, timeout=30)
    return wait_for_topic_delete
@pytest.fixture
def sns_subscription(sns_client):
    sub_arns = []
    def _create_sub(**kwargs):
        if kwargs.get("ReturnSubscriptionArn") is None:
            kwargs["ReturnSubscriptionArn"] = True
        
        response = sns_client.subscribe(**kwargs)
        sub_arn = response["SubscriptionArn"]
        sub_arns.append(sub_arn)
        return response
    yield _create_sub
    for sub_arn in sub_arns:
        try:
            sns_client.unsubscribe(SubscriptionArn=sub_arn)
        except Exception as e:
            LOG.debug(f"error cleaning up subscription {sub_arn}: {e}")
@pytest.fixture
def sns_topic(sns_client, sns_create_topic):