json_schema: {
      "additionalProperties": false,
      "description": "Schema for mobile contexts",
      "properties": {
          "androidIdfa": {
              "type": "string"
          },
          "appleIdfa": {
              "type": "string"
          },
          "appleIdfv": {
              "type": "string"
          },
          "carrier": {
              "type": [
                  "string",
                  "null"
              ]
          },
          "deviceManufacturer": {
              "type": "string"
          },
          "deviceModel": {
              "type": "string"
          },
          "openIdfa": {
              "type": "string"
          },
          "osType": {
              "type": "string"
          },
          "osVersion": {
              "type": "string"
          }
      },
      "required": [
          "osType",
          "osVersion",
          "deviceManufacturer",
          "deviceModel"
      ],
      "self": {
          "format": "jsonschema",
          "name": "mobile_context",
          "vendor": "com.snowplowanalytics.snowplow",
          "version": "1-0-0"
      },
      "type": "object"
  }