Add Filter for HS Context

I have a client that wants to integrate their forms with Hubspot, but also tie those contacts to salesforce. This is already possible with the Hubspot API. When making a form submission through the API, one of the parameters one can send is “sfdcCampaignId” under “hs_context”.

However, with this plugin, I have no ability to add parameters to the “hs_context” array. You provide filters to modify the pageUrl or pageName parameters, but it would be helpful if there was filter for the entire hs_context array so that I can add a parameter like “sfdcCampaignId”.