Generate JWT Token

const crypto = require('crypto');

// Example values
const currency = 'BTC';
const amount = '0.001';
const orderId = '12345';

// Create signature string
const signatureData = `${currency}#${amount}#${orderId}`;

// Generate signature hash
const signature = crypto
  .createHash("sha256")
  .update(JSON.stringify(signatureData))
  .digest("hex");

const payload = {
  "url": "/path/to/endpoint",  // API endpoint path
  "iat": Date.now(),          // Issued at time (milliseconds)
  "exp": Date.now() + 60000,  // Expiration time (current time + 60 seconds)
  "key": "YOUR_AUTH_KEY",     // Your Auth Key
  "signature": signature      // The signature created above
};

const jwt = require('jsonwebtoken');

// Create the signed token
const token = jwt.sign(
  payload,
  'YOUR_ENC_KEY',   // Your Enc Key
  { algorithm: 'HS256' }
);

// The token can now be used in your API request

const headers = {
  'Authorization': `Bearer ${token}`,
  'x-auth-key': 'YOUR_AUTH_KEY',
  'Content-Type': 'application/json'
};

// Make your API request with these headers