Erro na requisição: 405 Client Error: Method Not Allowed

Hi, I am sending the following request:

import requests


def generate_embedded_signing_url(api_key, package_id, instance_url):
roleId="63f942c0-8c00-4733-8c96-8275b9100555"
url = f"{instance_url}/api/packages/{package_id}/roles/{roleId}/signingUrl"

headers = {
"Accept": "application/json",
"Content-Type": "application/json",
"Authorization": f"Basic {api_key}"
}

payload = {
"roleId": roleId,
"packageId": package_id,
"url": "https://sandbox.esignlive.com/auth?senderAuthenticationToken"
"=MjE5YjAyZDktM2VkZC00ODAwLWExMjItZjYxMzEwOTU3ZDAx&target=https://sandbox.esignlive.com/a/transaction"
"/yX2hKk8CIZPmyWHpv3PaHD0g0rY=/designer"
}

http_proxy = "http://proxybl.net.bradesco.com.br:80"
https_proxy = "http://proxybl.net.bradesco.com.br:80"

proxies = {
"http": http_proxy,
"https": https_proxy
}

try:
response = requests.post(url, headers=headers, proxies=proxies)
response.raise_for_status() # Verifica se a resposta foi bem-sucedida (status 2xx)
data = response.json()
print(response)
return data
except requests.exceptions.RequestException as e:
print("Erro na requisição:", e)
return None

api_key = "api key"
package_id = "id_package"
instance_url = "https://sandbox.esignlive.com"
signing_url = generate_embedded_signing_url(api_key, package_id, instance_url)
if signing_url:
print("URL da Cerimônia de Assinatura Incorporada:", signing_url)
else:
print("Falha ao gerar o URL da Cerimônia de Assinatura Incorporada.")

However, I am getting the return: Request error: 405 Client Error: Method Not Allowed
 

can you help me?