EventRequest Does Not Work if Using OJ.mimic_json

[fiestacasey]

Which SDK version are you using?

What's the issue?

When using oj.mimic_json an FacebookAds::ServerSide::EventRequest raises an exception. The standard JSON library supports object_class and array_class when parsing JSON but OJ does not. Given the popularity of OJ I think that this gem should avoid using object_class. Here's the source that is raising the issue:

https://github.com/facebook/facebook-ruby-business-sdk/blob/8a49e6bc46ff825632a93cdfa9f0016f4825494b/lib/facebook_ads/ad_objects/server_side/event_request.rb#L158

Steps/Sample code to reproduce the issue

require 'facebookbusiness'
require 'oj_mimic_json'

# TODO: REPLACE WITH VALID ACCESS TOKEN AND PIXEL ID
access_token = 'TODO'
pixel_id = 'TODO'

FacebookAds.configure do |config|
  config.access_token = access_token
end

user_data = FacebookAds::ServerSide::UserData.new(
  email: 'casey@wantable.com'
)

custom_data = FacebookAds::ServerSide::CustomData.new(
  value: 100,
  currency: 'USD',
  content_name: 'Style Edit',
  content_ids: 'style-edit',
  content_type: 'product',
  order_id: '123456'
)

event = FacebookAds::ServerSide::Event.new(
  event_name: 'Purchase',
  action_source: 'website',
  event_id: '123456',
  event_time: Time.now.to_i,
  user_data: user_data,
  custom_data: custom_data
)

request = FacebookAds::ServerSide::EventRequest.new(
  pixel_id: pixel_id,
  events: [event]
)

print request.execute # where the exception is raised.

Observed Results:

This is raised:

ruby/gems/2.6.0/gems/facebookbusiness-0.10.0.0/lib/facebook_ads/ad_objects/server_side/event_request.rb:160:in `execute': undefined method `events_received' for #<Hash:0x00007fc1dc1dbc08> (NoMethodError)

Expected Results:

Execution without an exception

[stale[bot]]

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