Payment Price Update

When quote expires you will receive a POST to your postback url provided with a price update and new expiry time

{
  "fn": "paymentPriceUpdated",
  "paymentId":"613ec4a3608c8f0b7006ebc6",
  "payment_code": "Nadr93@@BY",
  "payment_address": "0xasdfasdfasdfasdfasdfasdfads",
  "payment_amount":"0.00230000",
  "payment_missing_amount": "0.001",
  "payment_amount_asset":"BTC",
  "exchange_rate":"44539.66",
  "payment_payreq":"lntb4490380n1psnajyupp5sq8tx8whnt2jm0wmnu5rlry5hrm2pjvgrjyx9wg26kcqw6psmezsdpyg9xxj4r0xayhqs6ryqkjq3r9d4hjq5mfw3jscqzpgxqzjhsp500ue63g6y39e9q2su5mgwtcrtjhjuga9zrck23fphykpv59g4hrq9qyyssqk4z7ugknhjas7g0j8sy9twsnn38m7us273lkwzfv7u4mdt95rsfyr9x0t2h24rqh4h6jqhfmnplst8u45v62hcfaa3hx4v2cwduz5qsqv2ftag",
  "expires_at": 1631592266,
}