Retrieves a schedule rotation user

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

{
  "data": {
    "id": "75265b02-cd2f-4475-9b27-e4b6732ebf5c",
    "type": "schedule_rotation_users",
    "attributes": {
      "schedule_rotation_id": "463e1dad-eaa4-4038-8e11-2afed978ba53",
      "user_id": 1031,
      "position": 1,
      "created_at": "2026-02-21T14:34:30.032-08:00",
      "updated_at": "2026-02-21T14:34:30.032-08:00"
    }
  }
}