Xid string //xapp xid in req
Meid *xapp.RMRMeid //meid transaction related
SubReqMsg *e2ap.E2APSubscriptionRequest //SubReq TODO: maybe own transactions per type
+ SubRespMsg *e2ap.E2APSubscriptionResponse //SubResp TODO: maybe own transactions per type
SubDelReqMsg *e2ap.E2APSubscriptionDeleteRequest //SubDelReq TODO: maybe own transactions per type
Payload []byte //packed message to optimize retransmissions
PayloadLen int //packed message len to optimize retransmissions