+ mutex sync.Mutex // Lock
+ registry *Registry // Registry
+ Seq uint16 // SubsId
+ Meid *xapp.RMRMeid // Meid/ RanName
+ EpList RmrEndpointList // Endpoints
+ DelEpList RmrEndpointList // Endpoints
+ DelSeq uint64
+ TransLock sync.Mutex // Lock transactions, only one executed per time for subs
+ TheTrans *Transaction // Ongoing transaction from xapp
+ SubReqMsg *e2ap.E2APSubscriptionRequest // Subscription information
+ SubRespMsg *e2ap.E2APSubscriptionResponse // Subscription information