# contact.topics.updated

Event triggered whenever a **contact's topic subscriptions change**.

## Response Body Parameters

All webhook payloads follow a consistent top-level structure with
event-specific data nested within the `data` object.

- `type` (string) — The event type that triggered the webhook (e.g., `contact.topics.updated`).

- `created_at` (string) — ISO 8601 timestamp when the webhook event was created.

- `data` (object) — Event-specific data containing detailed information about the event. The data object for the `contact.topics.updated` event contains the following parameters:

  ::::accordion{title="object parameters"}
  - `email` (string) — Contact's email address

  - `topics` (array) — Topics changed in this update, each with its new subscription

    :::accordion{title="topic object"}
    - `id` (string) — Unique identifier for the topic

    - `subscription` (opt\_in | opt\_out) — The contact's new subscription to the topic
    :::
  ::::

:::code-group
```json
{
  "type": "contact.topics.updated",
  "created_at": "2026-02-12T10:00:00.000Z",
  "data": {
    "email": "steve.wozniak@gmail.com",
    "topics": [
      {
        "id": "b6d24b8e-af0b-4c3c-be0c-359bbd97381e",
        "subscription": "opt_in"
      },
      {
        "id": "07d84122-7224-4881-9c31-1c048e204602",
        "subscription": "opt_out"
      }
    ]
  }
}
```
:::

## Related pages

- [email.bounced](./learn-webhooks-emails-bounced.md)
- [email.clicked](./learn-webhooks-emails-clicked.md)
- [email.complained](./learn-webhooks-emails-complained.md)
- [email.delivered](./learn-webhooks-emails-delivered.md)
- [email.delivery_delayed](./learn-webhooks-emails-delivery-delayed.md)
- [email.failed](./learn-webhooks-emails-failed.md)
- [email.opened](./learn-webhooks-emails-opened.md)
- [email.received](./learn-webhooks-emails-received.md)
- [email.scheduled](./learn-webhooks-emails-scheduled.md)
- [email.sent](./learn-webhooks-emails-sent.md)

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