There is provided methods, systems and apparatuses for management of network functions. In some embodiments, an apparatus includes a processor and a non-transient memory for storing instructions that when executed by the processor cause the apparatus to be configured to perform a method including steps as follows. The apparatus is configured to perform steps including sending, towards a source network exposure function (S-NEF) associated with a user equipment (UE), an event notification and obtaining, information on a target network exposure function (T-NEF) to be associated with the UE, and sending towards the S-NEF an event subscription update notification indicative of a change of destination for subsequent event notifications. The apparatus is further configured to perform steps including receiving, from the S-NEF, an event subscription update notification acknowledgement indicative of acceptance of the change and sending, towards the T-NEF, the subsequent event notifications.