Creates an escalation level for an Escalation Policy

curl --request POST \
  --url https://api.rootly.com/v1/escalation_policies/{escalation_policy_id}/escalation_levels \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '
{
  "data": {
    "type": "escalation_levels",
    "attributes": {
      "position": 123,
      "notification_target_params": [
        {
          "id": "<string>",
          "type": "team",
          "team_members": "all"
        }
      ],
      "delay": 123,
      "paging_strategy_configuration_strategy": "default",
      "paging_strategy_configuration_schedule_strategy": "on_call_only",
      "escalation_policy_path_id": "<string>"
    }
  }
}
'

{
  "data": {
    "id": "29d53619-975d-4f0c-9fe3-9d9a5d1154d3",
    "type": "escalation_levels",
    "attributes": {
      "escalation_policy_path_id": "050505b3-7f3e-4dc6-be86-8e25e590cdb0",
      "position": 1,
      "delay": 2,
      "escalation_policy_id": "8fd96580-44e8-4e3a-99b8-13f0b174b07e",
      "paging_strategy_configuration_strategy": null,
      "paging_strategy_configuration_schedule_strategy": null,
      "created_at": "2026-02-03T23:24:15.224-08:00",
      "updated_at": "2026-02-03T23:24:15.224-08:00",
      "notification_target_params": [
        {
          "id": "309",
          "type": "user",
          "team_members": "all"
        },
        {
          "id": "69c0422f-aa36-477d-a6f6-80fb772af02e",
          "type": "schedule",
          "team_members": "all"
        },
        {
          "id": "CX21345",
          "type": "slack_channel",
          "team_members": "all"
        }
      ]
    }
  }
}