> ## Documentation Index
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> Use this file to discover all available pages before exploring further.

# Download Event Data

Download large data payload associated with an event.

## **POST** `/revisions/:id/data/query` (Command: `download_execution_event_data`)

### Request Body

| Parameter      | Type   | Required | Description                              |
| :------------- | :----- | :------- | :--------------------------------------- |
| `engine`       | string | Yes      | Must be `workflow_blobhub`.              |
| `command`      | string | Yes      | Must be `download_execution_event_data`. |
| `execution_id` | string | Yes      | The ID of the execution.                 |
| `data_id`      | string | Yes      | The ID of the data payload.              |

### Response

| Parameter | Type   | Description                |
| :-------- | :----- | :------------------------- |
| `data`    | object | The requested data object. |

### Example

<CodeGroup>
  ```json Request theme={null}
  {
    "engine": "workflow_blobhub",
    "command": "download_execution_event_data",
    "execution_id": "exec_001",
    "data_id": "data_001"
  }
  ```

  ```json Response theme={null}
  {
    "data": { ... }
  }
  ```
</CodeGroup>