> ## Documentation Index
> Fetch the complete documentation index at: https://docs.x.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ActivitySubscription

> Reference for the Schemas.ActivitySubscription TypeScript interface in the X API SDK. Field definitions, types, and properties for X API request or response.

[Schemas](/xdks/typescript/reference/modules/Schemas).ActivitySubscription

## Properties

<ResponseField name="createdAt" type="string" required />

<ResponseField name="eventType" type="string" required />

<ResponseField name="filter" type="ActivitySubscriptionFilter" required />

<ResponseField name="subscriptionId" type="string" required />

<ResponseField name="tag" type="string" />

<ResponseField name="updatedAt" type="string" required />

<ResponseField name="webhookId" type="string" />