{
  "note": "One POST /v1/notification_message_types per item (Idempotency-Key required). The catalogue (GET /v1/notification_catalog) fills name, event types and default copy from the key.",
  "message_types": [
    {
      "key": "streak_at_risk",
      "routes": [
        {
          "channel": "mobile_push",
          "path": "builtin"
        },
        {
          "channel": "web_push",
          "path": "builtin"
        }
      ]
    },
    {
      "key": "level_up",
      "routes": [
        {
          "channel": "mobile_push",
          "path": "builtin"
        },
        {
          "channel": "web_push",
          "path": "builtin"
        }
      ]
    }
  ]
}