{
  "topology_description": {
    "type": "Unknown",
    "servers": [
      {
        "address": "a:27017",
        "avg_rtt_ms": 5,
        "type": "RSGhost"
      }
    ]
  },
  "operation": "read",
  "read_preference": {
    "mode": "Nearest"
  },
  "suitable_servers": [],
  "in_latency_window": []
}
