Retrieve a single feature

{
  "topic": "com.acme/xdk_53/things/twin/commands/retrieve",
  "headers": {},
  "path": "/features/accelerometer"
}

{
  "topic": "com.acme/xdk_53/things/twin/commands/retrieve",
  "headers": {},
  "path": "/features/accelerometer",
  "value": {
    "properties": {
      "x": 3.141,
      "y": 2.718,
      "z": 1,
      "unit": "g"
    }
  },
  "status": 200
}