NIMSignalingCancelInviteNotifyInfo 成员列表

成员的完整列表，这些成员属于 NIMSignalingCancelInviteNotifyInfo,包括所有继承而来的类成员

	channelInfo	NIMSignalingNotifyInfo
	customInfo	NIMSignalingNotifyInfo
	eventType	NIMSignalingNotifyInfo
	fromAccountId	NIMSignalingNotifyInfo
	requestId	NIMSignalingCancelInviteNotifyInfo
	time	NIMSignalingNotifyInfo
	toAccountId	NIMSignalingCancelInviteNotifyInfo