curl --request POST \
  --url https://api.paygentic.io/v0/plans \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "name": "<string>",
  "invoiceDisplayName": "<string>",
  "description": "<string>",
  "merchantId": "<string>",
  "productId": "<string>",
  "billingInterval": "monthly",
  "price": "<string>",
  "paymentOptions": {
    "outOfBand": true,
    "payAsYouGo": true,
    "prePaid": false,
    "postPaid": false,
    "credits": ""
  },
  "currency": "USD",
  "tax": {},
  "prices": [
    "<string>"
  ]
}'

{
  "id": "<string>",
  "object": "plan",
  "name": "<string>",
  "paymentOptions": {
    "outOfBand": true,
    "payAsYouGo": true,
    "prePaid": false,
    "postPaid": false,
    "credits": ""
  },
  "invoiceDisplayName": "<string>",
  "description": "<string>",
  "billingInterval": "<string>",
  "currency": "<string>",
  "merchantId": "<string>",
  "productId": "<string>",
  "walletNamespaceId": "<string>",
  "tax": {},
  "prices": [
    {
      "id": "<string>",
      "object": "price",
      "billableMetricId": "<string>",
      "model": "standard",
      "invoiceDisplayName": "<string>",
      "properties": {
        "unitPrice": "<string>"
      },
      "createdAt": "2023-11-07T05:31:56Z",
      "updatedAt": "2023-11-07T05:31:56Z",
      "deletedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "deletedAt": "2023-11-07T05:31:56Z"
}