Post apiv1checkout intents

{
  "buyer": {
    "postalCode": "<string>",
    "country": "<string>",
    "province": "<string>",
    "city": "<string>",
    "address2": "<string>",
    "address1": "<string>",
    "phone": "<string>",
    "email": "<string>",
    "lastName": "<string>",
    "firstName": "<string>"
  },
  "productUrl": "<string>",
  "createdAt": "2023-11-07T05:31:56Z",
  "developerId": "<string>",
  "id": "<string>",
  "state": "retrieving_offer"
}