Create an Offer post

curl --location --request POST 'https://api.synup.com/api/v4/posts' \
--header 'Authorization: API {token}' \
--header 'Content-Type: application/json' \
--data-raw '{
  "input": {
    "postName": "Spring Sale",
    "locationIds": [
      "{locationId}"
    ],
    "postType": "OFFER",
    "postSites": [
      "GOOGLE"
    ],
    "postMessage": [
      {
        "site": "GOOGLE",
        "message": "20% off all items!"
      }
    ],
    "postContextInfo": {
      "title": "Spring Sale",
      "couponCode": "SPRING20",
      "redeemUrl": "https://example.com/offer",
      "termsConditions": "Valid until April 30",
      "startDay": "2026-04-10",
      "startTime": "09:00",
      "endDay": "2026-04-30",
      "endTime": "23:59"
    },
    "postCta": [
      {
        "site": "GOOGLE",
        "type": "LEARN_MORE",
        "url": "https://example.com/offer"
      }
    ]
  }
}'