public static async Task <string> GenerateJwt(ClaimsIdentity identity, IJwtFactory jwtFactory, string userName, JwtIssuerOptions issuerOptions, JsonSerializerSettings serializerSettings)
{
var response = new
{
id = identity.Claims.Single(c => c.Type == "id").Value,
auth_token = await jwtFactory.CreateEncodedToken(userName, identity),
expires_in = (int)issuerOptions.ValidFor.TotalSeconds
};
return(JsonConvert.SerializeObject(response, serializerSettings));
}