How to implement the "StatusChangeNotification" API

This api is called by OmniChat whenever an order status change happens. The request is made by passing the following payload:

{
    "order": {
        "objectId": "string",
        "items": "OmniChatSchema.Item[]",
        "notes": [],
        "boletoInstructions": {},
        "creditCardInstructions": {},
        "status": "OmniChatSchema.OrderStatus",
        "discountMode": "'ABSOLUTE' | 'PERCENTAGE'",
        "discount": "number",
        "freightCost": "number",
        "canAcceptBoleto": "boolean",
        "canAcceptCreditCard": "boolean",
        "customer": "OmniChatSchema.Customer",
        "retailer": "OmniChatSchema.Retailer",
        "salesPerson": "OmniChatSchema.User",
        "pickUpInStore": "boolean",
        "statusTracking": "string",
        "shippingAddress": "OmniChatSchema.Address",
        "createdAt": "Date",
        "updatedAt": "Date",
        "retailerOrderId": "number",
        "statusChanges": "StatusChange[]"
    },
    "statusChange": {
        "status": "'ORDER_GATEWAY_PROVISIONED' | 'COLLECT_PAYMENT' | 'WAITING' | 'PAID' | 'PACKAGED' | 'SHIPPED' | 'PARTIALLY_SHIPPED' | 'DELIVERED' | 'NOT_PAID' | 'PARTIAL_PAID' | 'OVER_PAID' | 'CANCELLED' | 'REVERTED' | 'ERROR'",
        "responsible": "string",
        "message": "string",
        "updatedAt": "Date"
    }
}