curl --request PATCH \
  --url https://api.anchorbrowser.io/v1/batch-sessions/{batch_id} \
  --header 'Content-Type: application/json' \
  --header 'anchor-api-key: <api-key>' \
  --data '
{
  "status": "cancelled"
}
'

{
  "data": {
    "batch_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "cancelled_sessions": 123,
    "message": "<string>"
  }
}