Water meter usage from historical data

I’ve recently had my water utility company install a “smart” water meter and I can get the usage statistics from a rest -endpoint in json format. The problem is that while it reports usage per hour, it only updates every 8 hours so the rest -sensor I’ve made cannot track it and the energy dashboard only shows spikes of usage every 8 hours.

Is there a way to insert multiple entries of water usage somehow? The data in json format includes an array of objects which have a timestamp and increasing total sum of used water.

Please follow this thread: Import old energy readings for use in energy dashboard