curl --request POST \
  --url http://sandbox.mintlify.com/open/v1/plan/save \
  --header 'Content-Type: application/json' \
  --header 'X-GatePay-Certificate-ClientId: <x-gatepay-certificate-clientid>' \
  --header 'X-GatePay-Nonce: <x-gatepay-nonce>' \
  --header 'X-GatePay-Signature: <x-gatepay-signature>' \
  --header 'X-GatePay-Timestamp: <x-gatepay-timestamp>' \
  --data '
{
  "merchantPlanNo": "plan031004",
  "planName": "计划01",
  "planDesc": "计划描述01",
  "priceNo": "3"
}
'

{
  "code": "0",
  "message": "",
  "data": {
    "merchantPlanNo": "plan031004",
    "planNo": "63784604430893064"
  },
  "success": true
}