ChirpStack and Thingboard Intergration

I have Integrate some IOT DRAGINO SE01 from a ChirpStack - Open LNS server to the ThingsBoard and I want to separate the following "object" as JSON s_flag":1,"Mod":0,"BatV":3.326,"conduct_SOIL":227,"temp_SOIL":"12.97","water_SOIL":"31.17","i_flag":0,"temp_DS18B20":"0.00"} in order to produce different keys insted of one (BatV, conduct_SOIL,temp_SOIL,water_SOIL,temp_DS18B20)