SIGNL4 Alert

{
  "id": "2",
  "name": "SIGNL4 Alert",
  "nodes": [
    {
      "name": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        350,
        500
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "mode": "everyHour"
            }
          ]
        }
      },
      "typeVersion": 1
    },
    {
      "name": "Write Binary File",
      "type": "n8n-nodes-base.writeBinaryFile",
      "position": [
        880,
        500
      ],
      "parameters": {
        "fileName": "alert-data.json"
      },
      "typeVersion": 1
    },
    {
      "name": "Read Binary File",
      "type": "n8n-nodes-base.readBinaryFile",
      "position": [
        450,
        270
      ],
      "parameters": {
        "filePath": "alert-data.json"
      },
      "typeVersion": 1
    },
    {
      "name": "Binary to JSON",
      "type": "n8n-nodes-base.moveBinaryData",
      "position": [
        630,
        270
      ],
      "paramete...