Onboarding Schema

{
    "merchant_id": "string",
    "identity_number": "string",
    "onboarding_status": "string",
    "kyb_revision_deadline": "string",
    "kyb_rejection_details": [
        {
            "reason": "string",
            "entity_type": "string"
        }
    ],
    "created_at": "string",
    "updated_at": "string"
}