Correct JSON

Source/ProofOfConcept/Services/TeslaAuthenticatorService.cs

@@ -18,12 +18,20 @@ public class TeslaAuthenticatorService
     const string authEndpointURL = "https://fleet-auth.prd.vn.cloud.tesla.com/oauth2/v3/token";
     const string euBaseURL = "https://fleet-api.prd.eu.vn.cloud.tesla.com";
 
+    private JsonSerializerOptions serializerOptions;
+    
     public TeslaAuthenticatorService(ILogger<TeslaAuthenticatorService> logger, IOptions<TeslaAuthenticatorServiceConfiguration> options, IHttpClientFactory httpClientFactory, IMemoryCache memoryCache)
     {
         this.logger = logger;
         this.httpClientFactory = httpClientFactory;
         this.memoryCache = memoryCache;
         this.configuration = options.Value;
+
+        serializerOptions = new JsonSerializerOptions()
+        {
+            PropertyNameCaseInsensitive = true,
+            PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower
+        };
     }
 
     /// Asynchronously retrieves an authentication token from the Tesla partner API.
@@ -39,7 +47,7 @@ public class TeslaAuthenticatorService
 
         // URL to request the token
         const string audience = euBaseURL;
-
+        
         // Prepare the form-urlencoded body
         Dictionary<string, string> formData = new Dictionary<string, string>
         {