json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "additionalProperties": false,
      "required": [
          "type",
          "properties"
      ],
      "properties": {
          "type": {
              "type": "string",
              "enum": [
                  "FeatureCollection"
              ]
          },
          "properties": {
              "type": "object",
              "additionalProperties": false,
              "properties": {
                  "sensor": {
                      "type": "string",
                      "description": "the name of an existing sensor resource"
                  },
                  "name": {
                      "type": "string"
                  },
                  "description": {
                      "type": "string"
                  }
              }
          }
      }
  }