We are using {base}/web/dataset/call_kw endpoint to fetch data from multiple models.

E.g. event.event model returns following

{
  "jsonrpc": "2.0",
  "id": null,
  "result": [
    {
      "id": 72,
      "language_ids": [],
      "event_type_id": [
        70,
        "Some display name"
      ]
    }
  ]
}

We would like to fetch numerical id only without display name. Is that possible e.g. with some context key-value pair?

For event.event model problim is not huge but res.partner.relationship is bigger issue because references to res.partner will contain user names we would not like to store outside of the Odoo.