Signature

The "Signature" header is a body converted from JSON to a string and then HMAC SHA256 signed with a private key.

Example

JavaScript

import * as crypto from 'crypto';

function createHmacSHA256(message, key) {
  const hmac = crypto.createHmac('sha256', key);
  hmac.update(message);
  const hmacDigest = hmac.digest('hex');
  return hmacDigest;
}

const body = { "uniq_id": "0sv0c0c02da105aa6b7fbzf1zv05444d8a0ccd4c" }

console.log(createHmacSHA256(JSON.stringify(body), "Your Private Key");

Python

import hmac
import hashlib
import json

def create_hmac_sha256(message, key):
    hmac_instance = hmac.new(key.encode(), message.encode(), hashlib.sha256)
    hmac_digest = hmac_instance.hexdigest()
    return hmac_digest

body = { "uniq_id": "0sv0c0c02da105aa6b7fbzf1zv05444d8a0ccd4c" }
print(create_hmac_sha256(json.dumps(body, separators=(',', ':')), "Your Private Key"))