```ruby
class AddCreatedAtToSupportersActionJob < ActiveRecord::Migration
  def change
    add_column :supporters_action_job, :created_at, :datetime
  end
end
```

Fix typo in table name
user
```ruby
class AddCreatedAtToSupportersActionJobs < ActiveRecord::Migration
  def change
    add_column :supporters_action_jobs, :created_at, :datetime
  end
end
```
assistant