How to include only links of relationships in JSONAPI (ActiveModelSerializers gem)

user_serializer.rb

class Api::V1::UserSerializer < Api::V1::BaseSerializer
  type :users

  attributes :id, :name
  has_many :microposts, serializers: Api::V1::MicropostSerializer do
    link :self, '/api/v1/microposts' 
  end
end

users_controller.rb

class Api::V1::UsersController < Api::V1::BaseController
  before_action :load_resource

  def show
    auth_user = authorize_with_permissions(@user)

    render jsonapi: auth_user.record, serializer: Api::V1::UserSerializer, #auth_user.record returns a user AR object!
      include: [], fields: {users: [:id, :name]}
  end
end