export enum SubscribeType { personal = 'personal' , group = 'group' } author CaoMeiYouRen
 *  date export class export class Subscriber { type { number } subId : number ; type { string } subType : string ; constructor ( obj ) { Object . assign ( this , obj ) ; } } author CaoMeiYouRen
 *  date export class export class Subscribe { type { number } userId : number ; type { string } userName : string ; type { number } lastDynamic : number = Date . now ( ) ; type { number } lastLive : number = Date . now ( ) ; type { Subscriber [ ] } subscribers : Subscriber [ ] = [ ] ; constructor ( obj ) { Object . assign ( this , obj ) ; } }