You can try C# SDK LINE.Blockchain.SDK on Nuget (https://www.nuget.org/packages/LINE.Blockchain.SDK/)
The example of LINE.Blockchain.SDK is on github (https://github.com/Martin-Hsu/LINE-Blockchain-SDK_Example)
Alpha version for LINE Blockchain Developer. I implement the API with LINE Blockchain Developer doc.
using LINEBlockchainSDK.API.V1;
public string service_api_key = "xxx";
public string service_api_secret = "ooo";
APIManager api = new APIManager(NetworkType.Cashew, service_api_key, service_api_secret);
var result = api.ListAllServiceTokens();
using LINEBlockchainSDK.API.V1;
public string service_api_key = "xxx";
public string service_api_secret = "ooo";
public string serviceId = "ooo";
APIManager api = new APIManager(NetworkType.Cashew, service_api_key, service_api_secret);
var result = api.RetrieveServiceInformation(serviceId);
RetrieveServiceInformation
ListAllServiceTokens
RetrieveServiceTokenInformation
UpdateServiceTokenInformation
MintAServiceToken
BurnAServiceToken
ListAllServiceTokenHolders