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# ChangeDetails.EntityMetaData

A key-value map of entity metadata captured at the time of the change, such as entity name and parent IDs.

```
object ChangeDetails.EntityMetaData
```

## Discussion

Each key is a metadata attribute name, such as `name` or `campaignId`, not a fixed field name. The `entityMetaData` field is a free-form map rather than an object with named properties, so the reference page labels this key `Any Key`. Both keys and values are strings, and the set of keys present varies by `entityType`. For example, a `Campaign` entity’s `entityMetaData` typically includes `name`. An `AdGroup` entity’s also includes the parent `campaignId`.

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