- [Resource: ChangeEvent](https://developers.google.com/ad-manager/api/beta/reference/rest/v1/networks.changeEvents#ChangeEvent)
  - [JSON representation](https://developers.google.com/ad-manager/api/beta/reference/rest/v1/networks.changeEvents#ChangeEvent.SCHEMA_REPRESENTATION)
- [ChangeEventResourceType](https://developers.google.com/ad-manager/api/beta/reference/rest/v1/networks.changeEvents#ChangeEventResourceType)
- [OperationType](https://developers.google.com/ad-manager/api/beta/reference/rest/v1/networks.changeEvents#OperationType)
- [Methods](https://developers.google.com/ad-manager/api/beta/reference/rest/v1/networks.changeEvents#METHODS_SUMMARY)

## Resource: ChangeEvent

Represents a single entity change.

| JSON representation |
|---|
| ``` { "name": string, "changeTime": string, "resourceType": enum (`https://developers.google.com/ad-manager/api/beta/reference/rest/v1/networks.changeEvents#ChangeEventResourceType`), "entityId": string, "user": string, "operationType": enum (`https://developers.google.com/ad-manager/api/beta/reference/rest/v1/networks.changeEvents#OperationType`) } ``` |

| Fields ||
|---|---|
| `name` | `string` Identifier. The resource name of the `ChangeEvent`. Format: `networks/{networkCode}/changeEvents/{change_event}` |
| `changeTime` | ``string (`https://protobuf.dev/reference/protobuf/google.protobuf#timestamp` format)`` Output only. Time when the change happened. Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: `"2014-10-02T15:01:23Z"`, `"2014-10-02T15:01:23.045123456Z"` or `"2014-10-02T15:01:23+05:30"`. |
| `resourceType` | ``enum (`https://developers.google.com/ad-manager/api/beta/reference/rest/v1/networks.changeEvents#ChangeEventResourceType`)`` Output only. The type of the resource that was changed. |
| `entityId` | `string (https://developers.google.com/discovery/v1/type-format format)` Output only. The id of the resource that was changed. Typically, this is a part of the resource name for that entity. It is represented here as a long for legacy reasons. |
| `user` | `string` Output only. The user that made the change. Format: `networks/{networkCode}/users/{user}` |
| `operationType` | ``enum (`https://developers.google.com/ad-manager/api/beta/reference/rest/v1/networks.changeEvents#OperationType`)`` Output only. The type of operation associated with the `ChangeEvent`. |

## ChangeEventResourceType

The type of resource a change occurred on.

| Enums ||
|---|---|
| `CHANGE_EVENT_RESOURCE_TYPE_UNSPECIFIED` | No value specified |
| `BASE_RATE` | The Base Rate entity type |
| `COMPANY` | The Company entity type, which might be either a `Company`, `ChildPublisher`, `Partner`, or `ViewabilityProvider` resource. |
| `CONTACT` | The Contact entity type |
| `CREATIVE` | The Creative entity type |
| `CREATIVE_SET` | The Creative Set entity type |
| `CUSTOM_FIELD` | The Custom Field entity type |
| `CUSTOM_KEY` | The Custom Key entity type |
| `CUSTOM_VALUE` | The Custom Value entity type |
| `PLACEMENT` | The Placement entity type |
| `AD_UNIT` | The Ad Unit entity type |
| `LABEL` | The Label entity type |
| `LINE_ITEM` | The Line Item entity type |
| `NETWORK` | The Network entity type |
| `ORDER` | The Order entity type |
| `PROPOSAL` | The Proposal entity type |
| `PROPOSAL_LINK` | The Proposal Link entity type |
| `PROPOSAL_LINE_ITEM` | The Proposal Line Item entity type |
| `PACKAGE` | The Package entity type |
| `ROLE` | The Role entity type |
| `TEAM` | The Team entity type |
| `USER` | The User entity type |

## OperationType

The kind of operation associated with the ChangeEvent.

| Enums ||
|---|---|
| `OPERATION_TYPE_UNSPECIFIED` | No value specified |
| `CREATE` | The resource was created. |
| `UPDATE` | The resource was updated. |
| `DELETE` | The resource was deleted. |

| ## Methods ||
|---|---|
| ### `https://developers.google.com/ad-manager/api/beta/reference/rest/v1/networks.changeEvents/get` | Retrieves a `ChangeEvent` object. |
| ### `https://developers.google.com/ad-manager/api/beta/reference/rest/v1/networks.changeEvents/list` | Lists `ChangeEvent` objects. |