Retrieves an escalation level

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

{
  "data": {
    "id": "619d388a-577e-4d9e-a94c-0c82db23f006",
    "type": "escalation_levels",
    "attributes": {
      "escalation_policy_path_id": null,
      "position": 1,
      "delay": 5,
      "escalation_policy_id": "204aa897-48d4-4bde-8f1e-b74fbb0d04fb",
      "paging_strategy_configuration_strategy": null,
      "paging_strategy_configuration_schedule_strategy": null,
      "created_at": "2025-03-22T22:59:20.007-07:00",
      "updated_at": "2025-03-22T22:59:20.007-07:00",
      "notification_target_params": [
        {
          "id": "121",
          "type": "user",
          "team_members": "all"
        }
      ]
    }
  }
}