fix: json.stringify addresses (#52)

src/components/FiatOnrampModal/index.tsx

@@ -91,12 +91,14 @@ export default function FiatOnrampModal() {
           colorCode: theme.accentAction,
           defaultCurrencyCode: 'eth',
           redirectUrl: 'https://app.uniswap.org/#/swap',
-          walletAddresses: MOONPAY_SUPPORTED_CURRENCY_CODES.reduce(
+          walletAddresses: JSON.stringify(
+            MOONPAY_SUPPORTED_CURRENCY_CODES.reduce(
               (acc, currencyCode) => ({
                 ...acc,
                 [currencyCode]: account,
               }),
               {}
+            )
           ),
         }),
       })