I would remove the rear seat, or at least the bottom portion of it, remove the trim and door sill covers and lift the carpet up at least in the back seat footwells and see how wet the carpet and the jute underneath it is. If the moisture is confined to only one small area, pull the carpet back, prop it up out of the way and dry the floor pan with towels. Remove the floor pan drain grommet if there is one. Leave the windows open, let the car sit in the sun for a few days to dry the carpet and jute. You can direct fans and hair dryers into the wet area to speed the process.
If the wet area is bigger, you may need to remove the console and front seats too, so you can lift the carpet up and dry the entire area. If the carpet and jute is extremely wet, you may have to remove all seats, trim, console, kick panels, etc so you can lift the carpet out in one piece. Lay it out on the ground on a tarp or clean cardboard and let it dry in the sun.
Be sure the carpet and jute are all 100% dry before reinstalling the carpet set. You can spray the carpet and jute with Lysol to help prevent mold and mildew. Spray it, let dry and spray again, do that several times. You have to be very thorough with this to prevent mold and mildew. Mold can ruin the carpet and worse yet, it can make you very sick, causes a lot of respiratory problems.