'list', 'additional_contacts' => 'list', 'approval_level' => 'unsigned int', 'cells' => 'list', 'countries' => 'list', 'deny_reason' => 'string', 'end_time' => 'datetime', 'estimated_reach' => 'unsigned int', 'id' => 'string', 'is_multicell' => 'bool', 'locale' => 'string', 'max_age' => 'unsigned int', 'min_age' => 'unsigned int', 'questions' => 'list', 'region' => 'string', 'request_status' => 'string', 'review_date' => 'datetime', 'start_time' => 'datetime', 'status' => 'string', 'submit_date' => 'datetime', 'total_budget' => 'unsigned int', ); } }