Tag keys in InfluxDB and Thinger

I am using InfluxDB inside of Thinger. I am sending data using ArduinoJson library to thinger from my NodeMCU (ESP8266). I am sending parameters like SensorID, temperature, location. By default, InfluxDB considers these as field keys. But, I want to convert location parameter from field key to tag key. How can I do that? Or is there any way to directly declare particular parameter as tag key in json string?

Hello @Technically_Nerd,
I’m not sure. How are you writing data from thinger to InfluxDB? Can you share some resources with me? Are you using grafana? Thank you.