Get current pending operational dataset

Example response

{
  "activeDataset": {
    "activeTimestamp": {
      "seconds": 10
    },
    "networkKey": "08277229F21FB7342D705D3CEFDC042A",
    "networkName": "OpenThread-e445",
    "extPanId": "996D3BEE320097A3",
    "meshLocalPrefix": "fd33:d3b9:89e3:72e4::/64",
    "panId": 58437,
    "channel": 21,
    "pskc": "FD943ECA225A28979B991EFAC1218A72",
    "securityPolicy": {
      "rotationTime": 672,
      "obtainNetworkKey": true,
      "nativeCommissioning": true,
      "routers": true,
      "externalCommissioning": true
    },
    "channelMask": 134215680
  },
  "pendingTimestamp": {
    "seconds": 10
  },
  "delay": 30000
}