curl --request GET \
  --url https://api.hubapi.com/crm/v3/owners/{ownerId} \
  --header 'Authorization: Bearer <token>'

{
  "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
    }
  ]
}