Here's a breakdown:
* Kinsa in Cebuano means "who."
* Diay is an intensifier, similar to "ba" in Tagalog.
* Ka is a pronoun meaning "you."
Therefore, the closest Tagalog equivalent is Sino ka ba? which directly translates to "Who are you?".
However, depending on the context, other Tagalog phrases could be used, such as:
* Ano ang pangalan mo? (What is your name?)
* Sino ka? (Who are you?)
* Anong ginagawa mo dito? (What are you doing here?)