# Raw event formats

Blurr assumes that raw event data is formatted as JSON.

```javascript
[
{
"event_id": "purchase",
"event_time": "2017-08-14T17:54:08",
"customer_identifier": "72a039b9-6759-901a-cf3a-3354d21beed2",
"session_id": "ey3je39-932u73",
"currency_balance": "4000",
"sku": "purple-plant"
"txn_amount": "4.99"
"purchase_source": "shop"
}
]
```
