Generate Layerre image variants from a webhook and post them to Slack

[
  {
    "data": {
      "nodeType": "trigger"
    },
    "event": "node_start",
    "nodeId": "c639d949-8bc9-44e4-a9a5-582e07c8bc43",
    "timestamp": 1780869943040
  },
  {
    "data": {
      "kind": "n8n-nodes-base.webhook"
    },
    "event": "seeded",
    "nodeId": "trigger",
    "timestamp": 1780869943040
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "trigger"
    },
    "event": "node_end",
    "nodeId": "c639d949-8bc9-44e4-a9a5-582e07c8bc43",
    "timestamp": 1780869943040
  },
  {
    "data": {
      "nodeType": "integration"
    },
    "event": "node_start",
    "nodeId": "3d39edd6-bebc-4336-b46c-43ff5dd0b7f9",
    "timestamp": 1780869943042
  },
  {
    "data": {
      "mode": "read",
      "status": "ok",
      "service": "layerre",
      "latencyMs": 250,
      "operation": "run",
      "simulated": true
    },
    "event": "integration_mocked",
    "nodeId": "integration",
    "timestamp": 1780869943293
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "integration"
    },
    "event": "node_end",
    "nodeId": "3d39edd6-bebc-4336-b46c-43ff5dd0b7f9",
    "timestamp": 1780869943293
  },
  {
    "data": {
      "nodeType": "integration"
    },
    "event": "node_start",
    "nodeId": "18a89aaf-85c7-40f9-91cf-f550043b0915",
    "timestamp": 1780869943299
  },
  {
    "data": {
      "mode": "read",
      "status": "ok",
      "service": "layerre",
      "latencyMs": 250,
      "operation": "run",
      "simulated": true
    },
    "event": "integration_mocked",
    "nodeId": "integration",
    "timestamp": 1780869943550
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "integration"
    },
    "event": "node_end",
    "nodeId": "18a89aaf-85c7-40f9-91cf-f550043b0915",
    "timestamp": 1780869943550
  },
  {
    "data": {
      "nodeType": "integration"
    },
    "event": "node_start",
    "nodeId": "6deff95d-1215-4201-96fa-46d0ebc74005",
    "timestamp": 1780869943552
  },
  {
    "data": {
      "service": "slack",
      "resolved": true
    },
    "event": "credential_access",
    "nodeId": "_context",
    "timestamp": 1780869943552
  },
  {
    "data": {
      "url": "https://slack.com/api/conversations.history?channel=C0B6WTD21QX&limit=5",
      "method": "GET"
    },
    "event": "http_fetch",
    "nodeId": "_context",
    "timestamp": 1780869943552
  },
  {
    "data": {
      "status": 200
    },
    "event": "slack.read",
    "nodeId": "integration",
    "timestamp": 1780869943842
  },
  {
    "data": {
      "mode": "read",
      "status": "ok",
      "service": "slack",
      "latencyMs": 290,
      "operation": "read"
    },
    "event": "integration_call",
    "nodeId": "integration",
    "timestamp": 1780869943842
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "integration"
    },
    "event": "node_end",
    "nodeId": "6deff95d-1215-4201-96fa-46d0ebc74005",
    "timestamp": 1780869943842
  },
  {
    "data": {
      "nodeType": "passthrough"
    },
    "event": "node_start",
    "nodeId": "457b746b-95b3-440b-8550-9198de09b055",
    "timestamp": 1780869943845
  },
  {
    "data": {},
    "event": "noOp",
    "nodeId": "passthrough",
    "timestamp": 1780869943845
  },
  {
    "data": {
      "status": "ok",
      "nodeType": "passthrough"
    },
    "event": "node_end",
    "nodeId": "457b746b-95b3-440b-8550-9198de09b055",
    "timestamp": 1780869943845
  }
]