curl --request POST \
  --url https://api.domo.com/v1/datasets/{dataset_id}/policies \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "Only Show Attendees",
  "filters": [
    {
      "column": "Attending",
      "values": [
        "TRUE"
      ],
      "operator": "EQUALS"
    }
  ],
  "users": [
    27
  ]
}
'

{
  "id": 8,
  "type": "user",
  "name": "Only Show Attendees",
  "filters": [
    {
      "column": "Attending",
      "values": [
        "TRUE"
      ],
      "operator": "EQUALS",
      "not": false
    }
  ],
  "users": [
    27
  ],
  "groups": []
}