Slack Error Notification Handler

[
  {
    "data": {
      "nodeType": "integration"
    },
    "event": "node_start",
    "nodeId": "7880a941-fcf9-43af-98e8-a0a28594c0c7",
    "timestamp": 1780781529164
  },
  {
    "data": {
      "service": "slack",
      "resolved": true
    },
    "event": "credential_access",
    "nodeId": "_context",
    "timestamp": 1780781529164
  },
  {
    "data": {
      "url": "https://slack.com/api/conversations.history?channel=C0B6WTD21QX&limit=5",
      "method": "GET"
    },
    "event": "http_fetch",
    "nodeId": "_context",
    "timestamp": 1780781529164
  },
  {
    "data": {
      "status": 200
    },
    "event": "slack.read",
    "nodeId": "integration",
    "timestamp": 1780781529395
  },
  {
    "data": {
      "mode": "read",
      "status": "ok",
      "service": "slack",
      "latencyMs": 231,
      "operation": "read"
    },
    "event": "integration_call",
    "nodeId": "integration",
    "timestamp": 1780781529395
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "integration"
    },
    "event": "node_end",
    "nodeId": "7880a941-fcf9-43af-98e8-a0a28594c0c7",
    "timestamp": 1780781529395
  },
  {
    "data": {
      "nodeType": "unsupported"
    },
    "event": "node_start",
    "nodeId": "a089f0e1-ce9a-4b65-8d75-29cabda31bc6",
    "timestamp": 1780781529398
  },
  {
    "data": {
      "type": "n8n-nodes-base.errorTrigger"
    },
    "event": "unsupported_node",
    "nodeId": "unsupported",
    "timestamp": 1780781529398
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "unsupported"
    },
    "event": "node_end",
    "nodeId": "a089f0e1-ce9a-4b65-8d75-29cabda31bc6",
    "timestamp": 1780781529398
  },
  {
    "data": {
      "nodeType": "passthrough"
    },
    "event": "node_start",
    "nodeId": "error-c55efd02",
    "timestamp": 1780781529400
  },
  {
    "data": {},
    "event": "noOp",
    "nodeId": "passthrough",
    "timestamp": 1780781529400
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "passthrough"
    },
    "event": "node_end",
    "nodeId": "error-c55efd02",
    "timestamp": 1780781529400
  }
]