### 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_
describe_stream_response = dynamodbstreams_client.describe_stream(StreamArn=stream_arn)
            return describe_stream_response["StreamDescription"]["StreamStatus"] == "ENABLED"
        poll_condition(is_stream_ready)
    return _wait_for_stream_ready
@pytest.fixture()
def kms_create_key(create_boto_client):
    key_ids = []
    def _create_key(region=None, **kwargs):
        if "Description" not in kwargs:
            kwargs["Description"] = f"test description - {short_uid()}"
        key_metadata = create_boto_client("kms", region).create_key(**kwargs)["KeyMetadata"]
        key_ids.append((region, key_metadata["KeyId"]))
        return key_metadata
    yield _create_key
    for region, key_id in key_ids:
        try:
            
            create_boto_client("kms", region).schedule_key_deletion(
                KeyId=key_id, PendingWindowInDays=7
            )
        except Exception as e:
            exception_message = str(e)
            
            if (
                "KMSInvalidStateException" not in exception_message
                or "is pending deletion" not in exception_message
            ):
                LOG.debug("error cleaning up KMS key %s: %s", key_id, e)
@pytest.fixture()
def kms_replicate_key(create_boto_client):