Creates an escalation level for an Escalation Path

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

{
  "data": {
    "id": "6c139012-68b0-44a6-a4cf-d2f4cccba08a",
    "type": "escalation_levels",
    "attributes": {
      "escalation_policy_path_id": "1f706ab4-0cd5-4575-9488-285ed4a6dad9",
      "position": 2,
      "delay": 2,
      "escalation_policy_id": "0bc60251-5157-4774-94d6-574f75968be9",
      "paging_strategy_configuration_strategy": null,
      "paging_strategy_configuration_schedule_strategy": null,
      "created_at": "2025-08-26T21:12:15.275-07:00",
      "updated_at": "2025-08-26T21:12:15.275-07:00",
      "notification_target_params": [
        {
          "id": "129",
          "type": "user",
          "team_members": "all"
        },
        {
          "id": "6be883db-35e3-4884-b883-c1ea5bba240c",
          "type": "schedule",
          "team_members": "all"
        },
        {
          "id": "CX21345",
          "type": "slack_channel",
          "team_members": "all"
        }
      ]
    }
  }
}