推送器无法将通知发送到特定设备

Question

我正在使用推送服务将Notifications发送到所有Android设备。我已使用此代码从Android设备中提取了InstanceId

public class FirebaseIDService extends FirebaseInstanceIdService {
    @Override
    public void onTokenRefresh() {
        super.onTokenRefresh();
        String tkn = FirebaseInstanceId.getInstance().getToken();
    }
}  

这是我的python发送Push-Notification的代码。

 def push_notify(name,description):
            #method to push notification
            pn_client = PushNotifications(
                instance_id='fdb1f293-1c66-427d-b8a3-55fe5c6bb5a8',
                secret_key='9D508EDE95F5368EC8A4132AD6F5ED260718FD2C2A950A21234532D30D9E5031',
            )
            response = pn_client.publish(
                interests=['hello'],
                publish_body={'apns': {'aps': {'alert': 'Offer Created'}},
                              'fcm': {'token':
        ['fB123456789Zo:APA91bFqUUt_AHBi_W1yC0BSjBaZcTPx_GeLnv8QYGMtPOfob12DEB3tOYkvjMv3E-xvbyk95MdkIOTNPrtGSrzd20I8AWg9p5GXLMkBAI2f55RrOOFVJJ_WxxxJFNEfMBfAsADvo0Cn'],
        'notification': {'title': str(name), 'body': str(description)}}}
            )

            print(response['publishId'])

要求是我只想将通知发送到某些设备。如何实现