<p>The entity for which to retrieve change events. This specifies the service, resource, or other entity whose event history you want to examine.</p> <p>This is a string-to-string map. It can include the following fields.</p> <ul> <li> <p> <code>Type</code> designates the type of object this is.</p> </li> <li> <p> <code>ResourceType</code> specifies the type of the resource. This field is used only when the value of the <code>Type</code> field is <code>Resource</code> or <code>AWS::Resource</code>.</p> </li> <li> <p> <code>Name</code> specifies the name of the object. This is used only if the value of the <code>Type</code> field is <code>Service</code>, <code>RemoteService</code>, or <code>AWS::Service</code>.</p> </li> <li> <p> <code>Identifier</code> identifies the resource objects of this resource. This is used only if the value of the <code>Type</code> field is <code>Resource</code> or <code>AWS::Resource</code>.</p> </li> <li> <p> <code>Environment</code> specifies the location where this object is hosted, or what it belongs to.</p> </li> <li> <p> <code>AwsAccountId</code> specifies the account where this object is in.</p> </li> </ul> <p>Below is an example of a service.</p> <p> <code>{ "Type": "Service", "Name": "visits-service", "Environment": "petclinic-test" }</code> </p> <p>Below is an example of a resource.</p> <p> <code>{ "Type": "AWS::Resource", "ResourceType": "AWS::DynamoDB::Table", "Identifier": "Customers" }</code> </p>