curl --request POST \
  --url https://instance.prod.onboardapp.io/v1/alerts/bulk/assign \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "alert_tokens": [
    "<string>"
  ],
  "user_id": "<string>",
  "note": "<string>"
}
'

{
  "data": {
    "assigned": 123,
    "failed": 123
  },
  "meta": {
    "request_id": "req_9k4m2n1p3q",
    "page": {
      "cursor": "<string>",
      "has_more": true
    }
  }
}