Add owners to a non-human identity, identified by their email address. Owners that already exist on the identity are kept.

An identity can have at most 5 owners.

The API token must have the Manager access level or above, or be a service account token.

{
  "owners": [
    {
      "email": "jane.doe@example.com"
    }
  ]
}

{
  "owners": [
    {
      "id": 42,
      "email": "jane.doe@example.com",
      "user_id": 7,
      "confidence": 1
    }
  ]
}