This endpoint is also used to track a profile's activity. It takes as input the same payload as the above POST request, but as a base64-encoded string passed as a query parameter. NOTE: This is offered for backwards compatibility; we recommend all new implementations use the POST approach above.


  "token": "PUBLIC_KEY",
  "event": "Ordered Product",
  "customer_properties": {
    "$email": "[email protected]"
  "properties": {
    "item_name": "Boots",
    "$value": 100

Gets encoded into the following string, which is passed into the data parameter: