Apple iPhone 5s 2 Apple IDs
Short answer, yes, long answer, it's going to be a lot more trouble than it's worth. You'll have to constantly swap between them to get downloads/updates etc.

Each app/book/tune etc, even the iOS itself belongs to the account that purchased it.

If you really must have 2 IDs on one phone, the best solution is probably to set up Family Sharing &amp; join both IDs to the same 'family'.