User boosts a creator. Works in upsert mode.
How it works:
Payments made after boosting will be attributed to that creator.
Server API Key (format: {keyId}:{secret})
User ID
5-character creator key
^[A-Z0-9]{5}$Campaign ID (auto-assigned to active campaign if not specified)
Webhook tracking ID (included in webhook events triggered by this request)
Test mode (does not create actual data)
Success