[
  {
    "id": "trace-001",
    "root_span": "http-request",
    "duration_ms": 1500,
    "status": "OK",
    "spans": [
      {
        "id": "span-001",
        "name": "http-request",
        "parent_id": null,
        "start_time": "2026-04-17T20:00:00Z",
        "duration_ms": 1500,
        "attributes": {
          "http.method": "GET",
          "http.url": "/api/users"
        }
      },
      {
        "id": "span-002",
        "name": "database-query",
        "parent_id": "span-001",
        "start_time": "2026-04-17T20:00:00.100Z",
        "duration_ms": 500,
        "attributes": {
          "db.system": "postgresql",
          "db.statement": "SELECT * FROM users"
        }
      },
      {
        "id": "span-003",
        "name": "api-call",
        "parent_id": "span-001",
        "start_time": "2026-04-17T20:00:00.700Z",
        "duration_ms": 800,
        "attributes": {
          "http.method": "GET",
          "http.url": "https://api.example.com/data"
        }
      }
    ]
  },
  {
    "id": "trace-002",
    "root_span": "background-job",
    "duration_ms": 3200,
    "status": "ERROR",
    "spans": [
      {
        "id": "span-004",
        "name": "background-job",
        "parent_id": null,
        "start_time": "2026-04-17T20:05:00Z",
        "duration_ms": 3200,
        "attributes": {
          "job.type": "data-sync",
          "error": "timeout"
        }
      }
    ]
  }
]
