func (h Hook) Run(e *zerolog.Event, level zerolog.Level, msg string){
   logData := make(map[string]interface{})
   // create a string that appends } to the end of the buf variable you access via reflection
   ev := fmt.Sprintf("%s}", reflect.ValueOf(e).Elem().FieldByName("buf"))
   json.Unmarshal([]byte(ev), &logData)

   // now you can either access a map of the data (logData) or string of the data (ev)
}

func (e *zerolog.Event) GetEventString (string) {
   // if buffer only has { or is blank, could also do more checks to give a good default
   if len(reflect.ValueOf(e).Elem().FieldByName("buf")) < 2 {
      return "{ }"
   }
   ev := fmt.Sprintf("%s}", reflect.ValueOf(e).Elem().FieldByName("buf"))
   return ev
}