Slack Error Notification Handler

[
  {
    "data": {
      "nodeType": "integration"
    },
    "event": "node_start",
    "nodeId": "eb305364-de39-4b9e-ad6e-eea54ebf712d",
    "timestamp": 1780741297117
  },
  {
    "data": {
      "service": "slack",
      "resolved": true
    },
    "event": "credential_access",
    "nodeId": "_context",
    "timestamp": 1780741297117
  },
  {
    "data": {
      "url": "https://slack.com/api/conversations.history?channel=C0B6WTD21QX&limit=5",
      "method": "GET"
    },
    "event": "http_fetch",
    "nodeId": "_context",
    "timestamp": 1780741297117
  },
  {
    "data": {
      "status": 200
    },
    "event": "slack.read",
    "nodeId": "integration",
    "timestamp": 1780741297368
  },
  {
    "data": {
      "mode": "read",
      "status": "ok",
      "service": "slack",
      "latencyMs": 251,
      "operation": "read"
    },
    "event": "integration_call",
    "nodeId": "integration",
    "timestamp": 1780741297368
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "integration"
    },
    "event": "node_end",
    "nodeId": "eb305364-de39-4b9e-ad6e-eea54ebf712d",
    "timestamp": 1780741297368
  },
  {
    "data": {
      "nodeType": "unsupported"
    },
    "event": "node_start",
    "nodeId": "9babcea6-ac7c-4a75-bd4c-f3d6a54c0ec7",
    "timestamp": 1780741297373
  },
  {
    "data": {
      "type": "n8n-nodes-base.errorTrigger"
    },
    "event": "unsupported_node",
    "nodeId": "unsupported",
    "timestamp": 1780741297373
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "unsupported"
    },
    "event": "node_end",
    "nodeId": "9babcea6-ac7c-4a75-bd4c-f3d6a54c0ec7",
    "timestamp": 1780741297373
  },
  {
    "data": {
      "nodeType": "set"
    },
    "event": "node_start",
    "nodeId": "134acca3-d4a7-485c-ab45-5a2721ed6a2c",
    "timestamp": 1780741297377
  },
  {
    "data": {
      "inputKeys": [],
      "mergeKeys": [
        "string"
      ]
    },
    "event": "merged",
    "nodeId": "set",
    "timestamp": 1780741297377
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "set"
    },
    "event": "node_end",
    "nodeId": "134acca3-d4a7-485c-ab45-5a2721ed6a2c",
    "timestamp": 1780741297377
  },
  {
    "data": {
      "nodeType": "passthrough"
    },
    "event": "node_start",
    "nodeId": "error-ae938e5e",
    "timestamp": 1780741297380
  },
  {
    "data": {},
    "event": "noOp",
    "nodeId": "passthrough",
    "timestamp": 1780741297380
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "passthrough"
    },
    "event": "node_end",
    "nodeId": "error-ae938e5e",
    "timestamp": 1780741297380
  }
]