# Parameters

The default request parameters include:

<table data-header-hidden><thead><tr><th></th><th width="173"></th><th></th></tr></thead><tbody><tr><td>Parameters</td><td>Data type</td><td>Description</td></tr><tr><td><code>transactionId</code></td><td>string</td><td>unique transactionId for each game session where reward was earned</td></tr><tr><td><code>signature</code></td><td>string</td><td>crypto hash of data</td></tr><tr><td><code>userId</code></td><td>string</td><td>The unique identifier of users inside your application's environment provided by the publisher app in InitConfig</td></tr><tr><td><code>clientId</code></td><td>string</td><td>The unique identifier of the app instance provided by the publisher app in InitConfig<br><br>NOTE: This is NOT a mandatory parameter and will be only sent if it was set in the app during <code>Arcplay.init</code></td></tr><tr><td><code>accountId</code></td><td>string</td><td>unique accountId for publisher</td></tr><tr><td><code>bundleId</code></td><td>string</td><td>package name of app</td></tr><tr><td><code>reward</code></td><td>int</td><td>reward value</td></tr><tr><td><code>offerId</code></td><td>string</td><td>Id of game on which user earned reward</td></tr><tr><td><code>offerName</code></td><td>string</td><td>name of the game on which user earned reward</td></tr><tr><td><code>timestamp</code></td><td>string (<a href="https://en.wikipedia.org/wiki/ISO_8601#Combined_date_and_time_representations">ISO 8601 Combined Date Time Format with timezone</a>)</td><td>timestamp when reward callback was made</td></tr><tr><td><code>webviewSessionId</code></td><td>string</td><td>unique id of webview session</td></tr><tr><td><code>timeSpent</code></td><td>int</td><td>time spent by user on the gameSession (Unit: milliseconds)</td></tr></tbody></table>

NOTE:&#x20;

1. If you require ArcPlay.ai to send additional parameters that are not part of the above list, kindly reach out to [ArcPlay.ai customer success](https://arcplay-ai.gitbook.io/knowledge-portal/knowledge-portal/contact-details/customer-success) team for custom addition of params.

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