# Custom Event Data
source: https://developer.mastercard.com/open-finance-us/documentation/webhooks/webhooks-connect/webhooks-custom/index.md

There are two different objects you can use to receive information while the customer is interacting in a Mastercard Data Connect or Joint Borrower session on a mobile app or web pages.

* [webhookData Object](https://developer.mastercard.com/open-finance-us/documentation/webhooks/webhooks-connect/webhooks-custom/index.md#webhookdata-object)
* [webhookHeaders Object](https://developer.mastercard.com/open-finance-us/documentation/webhooks/webhooks-connect/webhooks-custom/index.md#webhookheaders-object)

### webhookData Object {#webhookdata-object}

If you pass the `webhookData` object in the [Generate Data Connect URL APIs](https://developer.mastercard.com/open-finance-us/documentation/connect/generate-2-connect-url-apis/index.md), you'll receive the object back in the body for all other Data Connect event types.

**Example:** Pass the `webhookData` object in a Generate Data Connect URL call to receive the `started` event notification.
* JSON

```JSON
"webhookData": {
  "unquiqueCustomerId": "123456789",
  "uniqueRequestId": "234567890"
}
```

* JSON

```JSON
{
  "customerId":"1005061234",
  "consumerId":"86238nvnw7269e224a4e3de12352d87d",
  "eventType":"started",
  "eventId":"1495468585434-0e73d1719173766fe4dfe1a8",
  "payload":{},
  "webhookData": {
    "unquiqueCustomerId": "123456789",
    "uniqueRequestId": "234567890"
  }
}
```

### webhookHeaders Object {#webhookheaders-object}

Passing the `webhookHeaders` object provides similar custom return behavior for every webhook event. However, it returns the results in the header instead of the body of the event.
* JSON

```JSON
"webhookHeaders": {
  "webhookServerKey": "sadf67ewrkh",
  "webhookCustomerSignature": "91l;kj234924987lj"
}
```

<br />

* JSON

```JSON
{
  "partnerId": "PARTNER_ID",
  "customerId": "CUSTOMER_ID",
  "type": "aggregation",
  "webhookData": {
    "unquiqueCustomerId": "123456789",
    "uniqueRequestId": "234567890"
  },
  "webhookHeaders": {
    "webhookServerKey": "sadf67ewrkh",
    "webhookCustomerSignature": "91l;kj234924987lj"
  }
}
```

For details of the events for Report webhooks see [Data Connect Report Events](https://developer.mastercard.com/open-finance-us/documentation/webhooks/webhooks-report/report-webhooks-dc/index.md).

<br />