Get historic data with continuous contract

When passing:

{
  "Symbol: "@MNQ",
  ...
  "timeRange": {
    "asFarAsTimestamp": "2022-04-23T09:00:00.000Z"
    "closestTimestamp": "2022-04-23T09:30:00.000Z"
  }
}

with md/getchart

this is the response immediately from the API:

a[{"s":200,"i":3,"d":{"mode":"RealTime","historicalId":959358,"realtimeId":959358}}]
a[{"e":"chart","d":{"charts":[{"id":959358,"eoh":true}]}}]

No historical data is actually getting returned. Is there a different way getting data for a contract beyond the current forward contracts expiration?