Getting 401 unauthorized Error

[nitinzd]

First of all, thanks @gonzalo-bulnes for creating such a nice gem.

I'm using Rails 5.1, Devise and Mongoid. I followed everything mentioned in readme and setup the gem. However I'm getting 401 unauthorized error on r Rails console. I overridden sessions controller to get authentication token by providing user name and password. I got the token and I'm requesting as get:
http://192.168.0.118:3000/quizzes
And sending headers as:
headers: {"Content-Type": "application/json", "Accept": "application/json", "user": {"login": "email", "authentication_token": "token"}}.
What am I missing? or making wrong?
Following is my setup:

Gem file:
gem 'simple_token_authentication', '~> 1.0'
simple_token_authentication.rb:
SimpleTokenAuthentication.configure do |config|
config.sign_in_token = false
config.header_names = {user: {authentication_token: 'authentication_token', login: 'login' }}
config.identifiers = {user: 'login'}
config.skip_devise_trackable = true
end
Model:
include Mongoid::Document
devise :database_authenticatable, :registerable,:invitable,
:recoverable, :rememberable, :trackable, :validatable
#Token Authenticatable
acts_as_token_authenticatable
attr_accessor :login
#For simple token
field :authentication_token
Controller:
module Api
module V1
class BaseController < ActionController::API

acts_as_token_authentication_handler_for User, fallback: :exception
respond_to :json
routes.rb:
devise_for :users, controllers: {invitations: "invitations", registrations: "admin/registrations", sessions: "api/v1/sessions"}