Hive9 to Workfront Integration

Hi, 

I would like to request input from everyone who might have integrated Hive9 with Workfront before. Hive9 is a budgeting tool that is used by our client to plan marketing campaign. A tactic must be submitted into Hive9 and then approved only then a request / project is to be created in Workfront. 

We would want to automate and integrate the process so that when a tactic is approved, a request will be automatically created in Workfront. 

I have reached out to Workfront Fusion support to enquire about this issue and it seem that this is not possible to be done using Fusion as we do not have a dedicated module for Hive9 and Hive9 does not support RESTful API for us to use Fusion HTTP Module. 

I would appreciate if anyone can provide an input on how should we integrate the two platforms so that the manual input of request / projects can be eliminated. Thank you!