Register explicit storefront notification permission

Merchant backend only, retention:view and retention:edit. Authenticate your customer and derive contactId on the server; never trust a browser-supplied contactId. Requires explicit permission, an allowed exact HTTPS origin, and a browser subscription to a supported push service. The endpoint and keys are encrypted. Maximum10 active subscriptions/contact. Existing endpoints cannot be transferred between customers. Limit120 requests/minute shared perproject. Scope defaults to SURVEY. Only an explicit new customer opt-in may pass RETENTION, permitting help and offers in addition to surveys. Existing subscriptions retain SURVEY scope until a new consent is registered. Optional timeZone is the IANA zone reported by the authenticated customer device, for example America/New_York; never infer it from IP or country. It adjusts configured contact hours for 90 days, then falls back to the store zone. It does not expand consent or create a schedule.

curl -X POST "https://bitelio-api.heltia.com/v1/retention/push-subscriptions" \  -H "Content-Type: application/json" \  -d '{    "contactId": "string",    "origin": "http://example.com",    "subscription": {      "endpoint": "http://example.com",      "keys": {        "p256dh": "string",        "auth": "string"      }    },    "consent": true  }'

{
  "id": "string",
  "status": "string"
}