Transactional Email API Request Body

Trying to send a very simple request (see below) against my dev HubSpot instance to validate a POC for automating various actions through an orchestration tool like Make.com.
**Note, values are replaced with dummy’s below to protect sensitivity.

{
 "emailId": xxxxxx,
 "message": {
 "to": "test@gmail.com",
 "from": "test@gmail.com"
 }
}

Getting this behemoth of an error… was anybody else able to debug this?

Hey @CLance - thanks for posting in the Community!
I’d like to tag in a few experts here to see if they have any insight that may help us out! @HubSpot_Corey, @ashleyidesign, and @RubenBurdin - any thoughts for @CLance?
Shane, Senior Community Moderator