Hi @Ashwin_P! Your best bet is probably globalConfig - that’s what Page Designer uses to store the page layout. Global config is best suited for data that is:
specific to your app
shared between all users of your app
relates to the schema of the base, but not record-specific information
It’s limited to around 100kb of data though - so it very much depends on how large your “large” is. The reason we suggest not using it for record-specific information is because on larger bases, you’ll very quickly pass that limit. If the data you’re storing relates to a specific record, you might be better of creating a field for your user and storing it there instead.