json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "CTT Sensor Status Schema",
      "type": "object",
      "properties": {
          "eui": {
              "type": "string"
          },
          "position": {
              "type": "object",
              "properties": {
                  "lat": {
                      "type": "number"
                  },
                  "lon": {
                      "type": "number"
                  }
              },
              "required": [
                  "lat",
                  "lon"
              ]
          },
          "status": {
              "type": "string",
              "enum": [
                  "OK",
                  "UNKNOWN"
              ]
          },
          "lastSeen": {
              "type": "string"
          },
          "lastObservation": {
              "type": "object",
              "properties": {
                  "eui": {
                      "type": "string"
                  },
                  "metadata": {
                      "type": "object",
                      "properties": {
                          "gateway_eui": {
                              "type": "string"
                          },
                          "server_time": {
                              "type": "string"
                          },
                          "datarate": {
                              "type": "string"
                          },
                          "frequency": {
                              "type": "number"
                          },
                          "rssi": {
                              "type": "integer"
                          },
                          "lsnr": {
                              "type": "integer"
                          },
                          "codingrate": {
                              "type": "string"
                          },
                          "modulation": {
                              "type": "string"
                          },
                          "channel": {
                              "type": "integer"
                          },
                          "rfchain": {
                              "type": "integer"
                          },
                          "crc": {
                              "type": "integer"
                          },
                          "altitude": {
                              "type": "integer"
                          },
                          "longitude": {
                              "type": "number"
                          },
                          "latitude": {
                              "type": "number"
                          }
                      },
                      "required": [
                          "gateway_eui",
                          "server_time",
                          "datarate",
                          "frequency",
                          "rssi",
                          "lsnr",
                          "codingrate",
                          "modulation",
                          "channel",
                          "rfchain",
                          "crc",
                          "altitude",
                          "longitude",
                          "latitude"
                      ]
                  },
                  "data": {
                      "type": "object",
                      "properties": {
                          "co2": {
                              "type": "number"
                          },
                          "no2": {
                              "type": "integer"
                          },
                          "temperature": {
                              "type": "number"
                          },
                          "humidity": {
                              "type": "number"
                          },
                          "pressure": {
                              "type": "number"
                          },
                          "pm1": {
                              "type": "integer"
                          },
                          "pm2": {
                              "type": "integer"
                          },
                          "pm10": {
                              "type": "integer"
                          },
                          "batteryLevel": {
                              "type": "integer"
                          }
                      },
                      "required": [
                          "co2",
                          "no2",
                          "temperature",
                          "humidity",
                          "pressure",
                          "batteryLevel"
                      ]
                  }
              },
              "required": [
                  "eui",
                  "metadata",
                  "data"
              ]
          }
      },
      "required": [
          "eui",
          "position",
          "status",
          "lastSeen",
          "lastObservation"
      ]
  }