curl --location --request POST '/gateway/base/biz' \
--header 'method: payOut' \
--header 'signType: SHA512' \
--header 'serviceName: api.pay' \
--header 'mchId: 1416010331032883200' \
--header 'timestamp: 1631671670' \
--header 'sign: 32554324534545432543' \
--header 'Content-Type: application/json' \
--data-raw '{
"amount": "10",
"currency": "KES",
"docType": "MPESA",
"paymentType": "MPESA",
"purpose": "Saf Mobile money",
"dynamic": "0",
"beneficiaryName": "John Doe",
"beneficiaryAccountNumber": "254725850798",
"mchOrderId": "1777270252",
"model": 0,
"beneficiaryMobile": "254725850798",
"callbackUrl": "https://b3b5-117-42-55-134.jp.ngrok.io/india-merchant/core/callback"
}'