[ASC] Implement Rate Limit Slow Down

```
Error: requestFailed(underlyingErrors: [Engine.NetworkError.invalidStatusCode(code: 429, underlying: Optional(Error Domain= Code=0 "{
	"errors": [{
		"status": "429",
		"code": "RATE_LIMIT_EXCEEDED",
		"title": "The request rate limit has been reached.",
		"detail": "We've received too many requests for this API. Please wait and try again or slow down your request rate."
	}]
```