feat: update event param type

customevents/events.go

@@ -3,11 +3,11 @@ package customevents
 import "log"
 
 // SendEmail sends the email
-func SendEmail(data interface{}) {
+func SendEmail(data string) {
 	log.Println("📨 Sending email with data: ", data)
 }
 
 // PayBills pays the bills
-func PayBills(data interface{}) {
+func PayBills(data string) {
 	log.Println("💲 Pay me a bill: ", data)
 }