JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.0.0/crypto-js.min.js"></script>

JavaScript

const decrypt = function (rawKey, encryptedData) {
    const split = encryptedData.split(':');
    if (split.length < 2) return '';

    const reb64 = CryptoJS.enc.Hex.parse(split[1]);
    const bytes = reb64.toString(CryptoJS.enc.Base64);
    
    const hexKey = rawKey.split("")
     .map(c => c.charCodeAt(0).toString(16).padStart(2, "0"))
     .join("");
    const hash = CryptoJS.AES.decrypt(bytes, CryptoJS.enc.Hex.parse(hexKey), {
        iv: CryptoJS.enc.Hex.parse(split[0]),
        mode: CryptoJS.mode.CTR,
        padding: CryptoJS.pad.NoPadding
    });
    const plain = hash.toString(CryptoJS.enc.Utf8);
    return plain;
}

const rawKey = '46ca2a49c8074dadb99843f6b86c5975';
const encryptedData = 'c7fa927db8d5e95d7a56eaa74ccdbd6c:5c739daa892ca101c0d0f9b122721a1ccda0de473ce1a1d81b12fafa2e63965022c10036fc991d1650e900';

const decyptedData = decrypt(rawKey, encryptedData);
document.write("decrypted data: ", decyptedData)