[Python] OpenSea API V2 - Invalid order signature while creating listing

I want to create listing via OpenSea API with Python. I have response: {"errors":["['Invalid order signature']"]}. I couldn't find and information in docs what to sign. Currently I am signing Order Parameters. Here is my code:

import requests
from web3.auto import w3
from eth_account.messages import encode_defunct
import time


def create_order_model():
current_time = int(time.time())
order = {
"offerer": "0xd107AC5e5830BB95f880cA3b1270ccCdAA0A3c5e",
"zone": "0x00000000e88fe2628ebc5da81d2b3cead633e89e",
"zoneHash": "0x3000000000000000000000000000000000000000000000000000000000000000",
"startTime": current_time,
"endTime": current_time + 2629743, # current_time + 1 month in seconds
"orderType": 2,
"offer": [
{
"itemType": 2,
"token": "0x45aeb17Db4dd06FF9Ca6cB1E37455AAF761Bdc14",
"identifierOrCriteria": "1",
"startAmount": "1",
"endAmount": "1",
},
],
"consideration": [
{
"itemType": 0,
"token": "0x0000000000000000000000000000000000000000",
"identifierOrCriteria": "0",
"startAmount": "9750000000000000000",
"endAmount": "9750000000000000000",
"recipient": "0xd107AC5e5830BB95f880cA3b1270ccCdAA0A3c5e",
},
{
"itemType": 0,
"token": "0x0000000000000000000000000000000000000000",
"identifierOrCriteria": "0",
"startAmount": "250000000000000000",
"endAmount": "250000000000000000",
"recipient": "0x70997970C51812dc3A010C7d01b50e0d17dc79C8",
},
],
"totalOriginalConsiderationItems": 2,
"salt": 12686911856931635052326433555881236148,
"conduitKey": "0x0000007b02230091a7ed01230072f7006a004d60a8d4e71d599b8104250f0000",
"nonce": 0,
"counter": 0
}
return order

def sing_order(msg):
private_key = "PRIVATE_KEY"
message = encode_defunct(text=str(msg))
signed_message = w3.eth.account.sign_message(message, private_key=private_key)
return signed_message.signature.hex()



def main():
url = "https://testnets-api.opensea.io/v2/orders/goerli/seaport/listings"
headers = {
"accept": "application/json",
"content-type": "application/json"
}

order_parameters = create_order_model()
print(order_parameters)

signature = sing_order(order_parameters)
print(signature)

params = {"parameters": order_parameters, "signature": str(signature)}
response = requests.post(url, headers=headers, json=params)
print(response.text)


if __name__ == '__main__':
main()


Inside seaport-js(SDK for javascript: https://github.com/ProjectOpenSea/s...ee57735ad17f2bdb4a91ac7c6/src/seaport.ts#L386) I found that there is function to sign data singOrder() and tried to convert this idea to Python. This is how converted by me sign_order look:

def sing_order(msg):
private_key = "PRIVATE_KEY"
domain_data = {
"name": "Seaport",
"version": "1.1",
"chainId": 5,
"verifyingContract": "0x00000000e88fe2628ebc5da81d2b3cead633e89e",
}
eip_721_order_type = {
"OrderComponents": [
{"name": "offerer", "type": "address"},
{"name": "zone", "type": "address"},
{"name": "offer", "type": "OfferItem[]"},
{"name": "consideration", "type": "ConsiderationItem[]"},
{"name": "orderType", "type": "uint8"},
{"name": "startTime", "type": "uint256"},
{"name": "endTime", "type": "uint256"},
{"name": "zoneHash", "type": "bytes32"},
{"name": "salt", "type": "uint256"},
{"name": "conduitKey", "type": "bytes32"},
{"name": "counter", "type": "uint256"},
],
"OfferItem": [
{"name": "itemType", "type": "uint8"},
{"name": "token", "type": "address"},
{"name": "identifierOrCriteria", "type": "uint256"},
{"name": "startAmount", "type": "uint256"},
{"name": "endAmount", "type": "uint256"},
],
"ConsiderationItem": [
{"name": "itemType", "type": "uint8"},
{"name": "token", "type": "address"},
{"name": "identifierOrCriteria", "type": "uint256"},
{"name": "startAmount", "type": "uint256"},
{"name": "endAmount", "type": "uint256"},
{"name": "recipient", "type": "address"},
],
}
order_components = str(msg)
message = encode_defunct(text=(str(domain_data) + str(eip_721_order_type) + str(order_components)))
signed_message = w3.eth.account.sign_message(message, private_key=private_key)
return signed_message.signature.hex()


Do you know how to properly sign an order that will be acceptable by OpenSea API?

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