curl --request GET \
  --url https://api.hubapi.com/crm/v3/owners/ \
  --header 'private-app-legacy: <api-key>'

{
  "paging": {
    "next": {
      "link": "<string>",
      "after": "<string>"
    }
  },
  "results": [
    {
      "id": "6166860",
      "email": "jsmith@example.com",
      "firstName": "John",
      "lastName": "Smith",
      "userId": 1296619,
      "createdAt": "2019-10-30T03:30:17.883Z",
      "updatedAt": "2019-12-07T16:50:06.678Z",
      "archived": false,
      "teams": [
        {
          "id": "178588",
          "name": "West Coast Sales",
          "primary": true
        },
        {
          "id": "178590",
          "name": "California Sales",
          "primary": false
        }
      ]
    }
  ]
}