curl --request POST \
  --url 'https://api.flashcat.cloud/channel/escalate/rule/update?app_key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "channel_id": 1001,
  "rule_id": "6621b23f4a2c5e0012ab34d0",
  "template_id": "6621b23f4a2c5e0012ab34d1",
  "rule_name": "Default escalation",
  "layers": [
    {
      "target": {
        "person_ids": [
          42
        ],
        "by": {
          "critical": [
            "voice"
          ],
          "warning": [
            "sms"
          ]
        }
      }
    }
  ]
}
'

{
  "request_id": "01HK8XQE3Z7JM2NTFQ5YJ8P9R4",
  "data": {}
}