When the status of your courier changes, you will receive the event payload as below:
{
"event_type": "courier.state.changed",
"resource_type": "courier",
"resource_id": "01563646-58c1-4607-8fe0-cae3e33c0001",
"data": {
"customer_reference_id": "reference id",
"nickname": "Sample Account",
"umbrella_name": "DHL",
"origin_country_alpha2": "HK",
"account_state": "active",
"auth_state": "verified"
}
}