curl --request POST \
  --url https://core.nozle.app/api/v1/customers/{external_customer_id}/wallets/{wallet_code}/alerts \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "alert": {
    "code": "wallet_balance_alert",
    "thresholds": [
      {
        "value": 99,
        "code": "warn",
        "recurring": false
      }
    ],
    "alert_type": "wallet_balance_amount",
    "name": "Wallet Balance Alert"
  }
}
'

{
  "alert": {
    "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
    "lago_organization_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
    "external_subscription_id": null,
    "billable_metric": null,
    "alert_type": "wallet_balance_amount",
    "code": "wallet_balance_alert",
    "name": "Wallet Balance Alert",
    "previous_value": 1000,
    "last_processed_at": "2025-05-19T10:04:21Z",
    "thresholds": [
      {
        "code": "warn",
        "recurring": false,
        "value": "99.0"
      }
    ],
    "created_at": "2025-03-20T10:00:00Z",
    "lago_wallet_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
    "wallet_code": "wallet_code",
    "direction": "decreasing"
  }
}