Changes to Add premium webhook user

the puuid request property format changed from no format to uuid

the enabled request property default value true was added

the response property data/user/last_checked_at became required for the status 201

the response property data/user/last_match became required for the status 201

the response property data/user/last_mmr became required for the status 201

the data/user/id response's property pattern ^[0-9a-fA-F]{24}$ was added for the status 201