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# <a id="bitdrift.public.unary.workflows.v1.RuleStartTracing"></a>RuleStartTracing

| Field | Type | Description |
|---|---|---|
| match_id | <span class="proto-type proto-type-primitive">string</span> | The match ID that when matched will trigger the start of trace sampling. |

#### Example
```json
{
  "match_id": "_i1yUnHjKfmWpCaD5Tazo"
}
```