How to retrieve invoices.created data from Stripe

I need to retrieve the invoices plan name from this call. But I cant seem to get it to work

This is how I'm calling it right now:

    public function whenInvoiceCreated($payload) {
        // Find user by Stripe ID
        $this->retrieveUser($payload)
            ->payments()
            ->create([
                'plan' => $payload['data']['object']['lines']['data']['plan']['name']
            ]);
    }

This is the APi call:

{
  "created": 1326853478,
  "livemode": false,
  "id": "evt_00000000000000",
  "type": "charge.succeeded",
  "object": "event",
  "request": null,
  "pending_webhooks": 1,
  "api_version": "2016-07-06",
  "data": {
    "object": {
      "id": "ch_00000000000000",
      "object": "charge",
      "amount": 900,
      "amount_refunded": 0,
      "application": null,
      "application_fee": null,
      "balance_transaction": "txn_00000000000000",
      "captured": true,
      "created": 1483678938,
      "currency": "usd",
      "customer": "cus_00000000000000",
      "description": null,
      "destination": null,
      "dispute": null,
      "failure_code": null,
      "failure_message": null,
      "fraud_details": {},
      "invoice": "in_00000000000000",
      "livemode": false,
      "metadata": {},
      "order": null,
      "outcome": {
        "network_status": "approved_by_network",
        "reason": null,
        "risk_level": "normal",
        "seller_message": "Payment complete.",
        "type": "authorized"
      },
      "paid": true,
      "receipt_email": null,
      "receipt_number": null,
      "refunded": false,
      "refunds": {
        "object": "list",
        "data": [],
        "has_more": false,
        "total_count": 0,
        "url": ----
      },
      "review": null,
      "shipping": null,
      "source": {
        "id": "card_00000000000000",
        "object": "card",
        "address_city": null,
        "address_country": null,
        "address_line1": null,
        "address_line1_check": null,
        "address_line2": null,
        "address_state": null,
        "address_zip": "343434",
        "address_zip_check": "pass",
        "brand": "Visa",
        "country": "US",
        "customer": "cus_00000000000000",
        "cvc_check": "pass",
        "dynamic_last4": null,
        "exp_month": 10,
        "exp_year": 2022,
        "funding": "credit",
        "last4": "4242",
        "metadata": {},
        "name": "-----"
        "tokenization_method": null
      },
      "source_transfer": null,
      "statement_descriptor": "Laracasts Subscription",
      "status": "succeeded"
    }
  }
}

I would assume this part needs to be modified:

'plan' => $payload['data']['object']['lines']['data']['plan']['name']