@startuml Server Invitation Step 01
InvitedUser -> Bastet : provide invitation URL
Bastet -> NativeLib : GET InitiatingUser pub key and message
InvitedUser -> Bastet : fill invitation
InvitedUser -> Bastet : select servers
Bastet -> NativeLib : get server cards for selected uids
NativeLib -> Bastet : server cards
Bastet -> NativeLib : invitation data & InitiatingUser pub key
NativeLib -> Server : POST encrypted invitation
Server -> Redis : Store invitation data
@enduml