1{
2    "in_latency_window": [
3        {
4            "address": "a:27017",
5            "avg_rtt_ms": 5,
6            "tags": {
7                "data_center": "dc"
8            },
9            "type": "Standalone"
10        }
11    ],
12    "operation": "write",
13    "read_preference": {
14        "mode": "SecondaryPreferred",
15        "tag_sets": [
16            {
17                "data_center": "nyc"
18            }
19        ]
20    },
21    "suitable_servers": [
22        {
23            "address": "a:27017",
24            "avg_rtt_ms": 5,
25            "tags": {
26                "data_center": "dc"
27            },
28            "type": "Standalone"
29        }
30    ],
31    "topology_description": {
32        "servers": [
33            {
34                "address": "a:27017",
35                "avg_rtt_ms": 5,
36                "tags": {
37                    "data_center": "dc"
38                },
39                "type": "Standalone"
40            }
41        ],
42        "type": "Single"
43    }
44}
45