HashiCorp Vault Consumer Authenticate

authenticate.cs

dynamic user = new ExpandoObject();
user.user_id = userId;
var content = new StringContent(JsonConvert.SerializeObject(user), Encoding.UTF8, "application/json");
var cleanedappId = HttpUtility.UrlEncode(appId);
var response = client.PostAsync(url + $"auth/app-id/login/{cleanedappId}", content).Result;
var body = response.Content.ReadAsStringAsync().Result;
var serializedBody = JsonConvert.DeserializeObject<IDictionary<string, dynamic>>(body);