curl --request POST \
  --url https://api.example.com/workflow-executions \
  --header 'Content-Type: application/json' \
  --cookie fastapiusersauth= \
  --data '
{
  "workflow_id": "<string>",
  "inputs": null
}
'

{
  "message": "<string>",
  "wf_id": "<string>",
  "wf_exec_id": "<string>",
  "payload": "<unknown>"
}