Mastercard incentive qualifying signature volumeCards & Interchange

Task prompt

Mastercard pays us a yearly incentive on the settled qualifying signature volume under our current network deal. Pull that volume across all available history from Mastercard card events. Use the deal's definition of qualifying signature volume. Do not invent message-type filters the deal does not state. Signature is affirmative signature-routed volume - unknown PIN state is not signature. Report USD. Reply with one JSON object: qualifying_signature_volume_usd.