How can you have a subjective experience without a body?

Some anecdotal data.

Many dreams I have are just of the computer screen of some coding problem. I think the problem could be x, so I try x. But I don't type the keyboard or anything, the code just magically appears as soon as I think of the solution. Then run the code (but no clicking) and it works or not. I feel in the dream success feeling or failure feeling but there is no body at all.

Also I have other dreams where there is no body that I am aware of but not going there in public.

There is no body sensation in these dreams. But dreaming is very much being consciousness as well as feeling emotions. So answering your question its possible to have a subjective experience without a body but whether you needed the body to learn to have that sensation without a body in the first place is unanswered.

I suspect sensory inputs are more important than a body. If that is the case then eyes can be replaced with cameras, ears with microphones etc. Text input is just another sensory input.