> For the complete documentation index, see [llms.txt](https://faq.droam.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://faq.droam.com/menu/webhooks/webhook-payload-types/event-payloads/sim-card-events.md).

# SIM Card Events

SIM Card Events are triggered by certain actions aimed at the SIM Card. 

**sim\_card.assigned\_to\_end\_user** – occurs when a blank SIM Card has been assigned to the End User. There are two situations: the end user registers on the platform with a bought SIM Card or the Organization / Company assigns its own SIM card to its end user (Listing 5.11). 

**Listing 5.11 – Example of sim\_card.assigned\_to\_end\_user Payload (JSON)** 

<pre><code>{
<strong>    "type":          "sim_card.assigned_to_end_user",
</strong>    "data":          {
        "sim_card":      {...//Sim Card Model}
<strong>    },
</strong>    "created_at":     {...//Date Time Model}
}
</code></pre>

**sim\_card.first\_usage** – occurs when the SIM was first used (Listing 5.12).&#x20;

**Listing 5.12 – Example of sim\_card.first\_usage Payload (JSON)**

```
{
    "type":         "sim_card.first_usage",
    "data":         {
        "sim_card":     {...//Sim Card Model}
    },
    "created_at":   {...//Date Time Model}
}

```