curl --request POST \
  --url https://{cluster}.cognitedata.com/api/v1/projects/{project}/simulators/routines/aggregate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "filter": {
    "modelExternalIds": [
      "<string>"
    ],
    "simulatorIntegrationExternalIds": [
      "<string>"
    ],
    "simulatorExternalIds": [
      "<string>"
    ]
  }
}
'

{
  "items": [
    {
      "count": 123
    }
  ]
}