{"message":"Payment Processing API is running","version":"3.0.0","endpoints":{"POST /api/payment/initiate-proposal-acceptance":"Initiate proposal acceptance payment","POST /api/payment/initiate-gig-order":"Initiate gig order payment","POST /api/payment/initiate-subscription-purchase":"Initiate subscription purchase","GET /api/payment/status/:trackingId":"Check payment processing status","GET /api/wallet/balance/:userId":"Get user wallet balance"}}