Retrieves a schedule rotation user

curl --request GET \
  --url https://api.rootly.com/v1/schedule_rotation_users/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "a3f67756-6aca-4bf9-b61f-b50967c7490e",
    "type": "schedule_rotation_users",
    "attributes": {
      "schedule_rotation_id": "788ba7d8-985c-4401-aa52-510b864c5a9c",
      "user_id": 425,
      "position": 2,
      "created_at": "2025-09-13T12:01:08.150-07:00",
      "updated_at": "2025-09-13T12:01:08.155-07:00"
    }
  }
}