curl --request GET \
  --url "https://api.stablepay.co/api/v1/quote/exchange_rate?source_currency=<SOURCE_CURRENCY>&target_currency=<TARGET_CURRENCY>" \
  --header "Authorization: Bearer <API_KEY>" \
  --header "X-StablePay-Timestamp: <TIMESTAMP>" \
  --header "X-StablePay-Nonce: <NONCE>" \
  --header "X-StablePay-Signature: <SIGNATURE>"

const response = await fetch("https://api.stablepay.co/api/v1/quote/exchange_rate?source_currency=<SOURCE_CURRENCY>&target_currency=<TARGET_CURRENCY>", {
  method: "GET",
  headers: {
    "Authorization": "Bearer <API_KEY>",
    "X-StablePay-Timestamp": "<TIMESTAMP>",
    "X-StablePay-Nonce": "<NONCE>",
    "X-StablePay-Signature": "<SIGNATURE>"
  }
});
console.log(await response.json());

{
  "rate": {
    "rate_pair_id": "usd_usdc",
    "source_currency": "USD",
    "target_currency": "USDC",
    "rate": "0.9998"
  },
  "as_of": 1718726400
}