The event state object identifies the state (not to be
confused with severity) of the notification and potentially
the current state of the functional component that generated
the notification. The possible states are:
'raise': A raise state identifies a notification received
as a result of a health-impacting condition, such
as a process failure. A subsequent clear state
notification will follow when the error condition
is resolved.
'clear': The clear state indicates that the condition
which generated a previous raise notification has
been resolved.