$params['pod'] string The Pod name (pod or pod_id is required)
$params['pod_id'] string The Pod ID (pod or pod_id is required)
$params['id'] int The item ID
$params['data'] array (optional) Associative array of field names + values
$params['bypass_helpers'] bool Set to true to bypass running pre-save and post-save helpers
$params['track_changed_fields'] bool Set to true to enable tracking of saved fields via PodsAPI::get_changed_fields()