<workflow_chain>
 <chain>
  <type>Email</type>
  <workflow>-coordinate_interaction_workflow</workflow>
 </chain>
 <chain>
  <type>Subscription Condition</type>
  <workflow>commerce_validation_workflow, edit_workflow</workflow>
 </chain>
 <chain>
  <type>Subscription Request</type>
  <workflow>edit_workflow, subscription_request_workflow</workflow>
 </chain>
 <chain>
  <type>Trial Condition</type>
  <workflow>commerce_validation_workflow, edit_workflow</workflow>
 </chain>
 <chain>
  <type>Trial Request</type>
  <workflow>edit_workflow, trial_request_workflow</workflow>
 </chain>
</workflow_chain>