Network Nodes and Methods Therein for Event Monitoring

The present disclosure provides a method (300) in a Vertical Application Layer, VAL, server. The method (300) includes: transmitting (310), to a Network Resource Management, NRM, server, a monitoring event subscription request. The monitoring event subscription request contains: a list of identities, IDs, of one or more VAL users or VAL User Equipments, UEs, for which event monitoring is requested, or a VAL group ID of a group of one or more VAL users or VALUEs for which event monitoring is requested, and a monitoring profile ID corresponding to a list of one or more events to be monitored, or event details indicating a list of one or more events to be monitored. The method (300) further includes: receiving (320), from the NRM server, a monitoring event subscription response as a response to the monitoring event subscription request.