How to fix error: "code":-32700,"message":"Parse error"?

Question

Python

import urllib3
import urllib.parse
import urllib.request
import zlib


data = bytes(urllib.parse.urlencode({"id":"1","jsonrpc":"2.0","method":"item.GetItemPhoneV1","params":{"meta":{"platform":"web","language":"ru"},"id":4562643838,"itemType":"Listing"}}), encoding='utf-8')

headers={"Accept": "*/*",
    "Accept-Encoding": "gzip, deflate, br",
    "Accept-Language": "ru-RU,ru;q=0.8,en-US;q=0.5,en;q=0.3",
    "Content-Length": "147",
    "Content-Type": "text/plain",
    "Cookie": "dfuid=ba401084-3c5b-4d03-96cf-224e78a28556; _ga=GA1.2.540627339.1642173394; rrpvid=168246429700007; cto_optout=1; rcuid=5e249f423a11c9000101e36b; _gid=GA1.2.257072888.1643640331; rr-viewItemId=2308834619; rrviewed=2308834619; _gat=1; rrlevt=1643728096258",
    "Origin": "https://www.domofond.ru",
    "Referer": "https://www.domofond.ru/",
    "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.175 Safari/537.36",
    "X-Request-Id": "a4ffe504-5907-41b5-aafe-416f5707929a"
    }

url = "https://api.domofond.ru/rpc"
req = urllib.request.Request(url, headers=headers, data=data, method='POST')
res = urllib.request.urlopen(req)
decompressed_data=zlib.decompress(res.read(), 16+zlib.MAX_WBITS)
print(decompressed_data)

Response:
{"jsonrpc":"2.0","id":null,"error":{"code":-32700,"message":"Parse error"}

I understand that something is wrong in the request