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