How save relationship through the JSON API link?

I have a model called company with belongsTo address. I have on backend a serializer with return the link address.

# frozen_string_literal: true
class CompanySerializer < ActiveModel::Serializer # :nodoc:
  ...

  has_one :address do
    link(:related) { company_address_path company_id: object.id }
    include_data false
  end
end

On load the route companies.edit.address automatically I GET response of http://ift.tt/2mB0uiR.

It works, but I need save this when change.

The only way I find to be near of answer is below:

import Route from 'ember-route';
import inject from 'ember-service/inject';

export default Route.extend({
  federativeUnits: inject(),

  setupController(controller) {
    this._super(...arguments);

    controller.set('states', this.get('federativeUnits.all'));
  },

  actions: {
    update() {
      this.controller.get('model.address.content').save();
    }
  }
});

The problem is the the given URL: http://ift.tt/2mgphpu