How to make the messaging system better?

Question

Database

I had a dilemma about how best to implement the message system.
There are two options.
The first one is three tables dialogList, dialogUsers and dialogMessages
dialogList:
id, type, name, owner
dialogUsers:
id, idDialog, status
dialogMessages:
id, idDialog, idUser, message
The second one is two tables dialogList and dialogMessages
dialogList:
id, type, name, owner , users(json object with list of users)
dialogMessages:
id, idDialog, idUser, message
question which system is better? which one to use and why?

Answer 1

Designing a database schema for a messaging system?