{
  "schema": "iglu:com.snowplowanalytics.snowplow/contexts/jsonschema/1-0-0",
  "data": [
    {
      "schema": "iglu:com.snowplowanalytics.snowplow/web_page/jsonschema/1-0-0",
      "data": { "id": "--- [STRING] [optional] Page view ID ---" }
    },
    {
      "schema": "iglu:com.google.analytics/cookies/jsonschema/1-0-0",
      "data": { "_ga": "--- [STRING] [optional] GA cookie ID ---" }
    },
    {
      "schema": "iglu:com.snowplowanalytics.snowplow.ecommerce/user/jsonschema/1-0-0",
      "data": {
        "id": "--- [STRING] User ID of logged-in user ---",
        "is_guest": --- [BOOLEAN] Whether user is logged-in ---,
        "email": "--- [STRING] Email of logged-in user ---"
      }
    }
  ]
}