Create a new user workflow run with one or more steps and start its execution.
Account API key passed in the Authorization header
Input data for the first step
List of steps to execute in the workflow
Email of the user who owns this workflow run
"elliot.alderson@tamtam.ai"
Client-generated UUID for the workflow run
"b3c6f5e2-1234-4abc-9def-0123456789ab"