Sunmi Remote Api

[ErsinDemirbas]

First of all, hello, I have a Sunmi LS2 model device. I have uploaded the application which I developed to the App Store and I want to get the hardware information of the device through this application. sunmiOpenApi when I request the api at as that address, I get a 30001 response. Specifically what is the json-body in the line Signing method: Sunmi-Sign = hmac256( json-body + appid + timestamp+ nonce , appkey)? I couldn't find a very detailed explanation. I would be very happy if you could help with this. (can also be a sample app)