This action ask the upgrade platform to process your database dump.
The process method is below

Use the below link to download the Dump Database
https://upgrade.odoo.com/database/v1/process
To process a database dump
Below are the Parameters
1-key (str) -- (required) your private key
2-request (str) -- (required) your request id

Below are the predefined keywords in dump database Returns
request result
Return type
json dictionary

Example code is below-

from urllib import urlencode
from io import BytesIO
import pycurl
import json

PROCESS_URL = "https://upgrade.odoo.com/database/v1/process"

fields = dict([
    ('request', '10534'),
    ('key', 'Aw7pItGVKFuZ_FOR3U8VFQ=='),
])
postfields = urlencode(fields)

c = pycurl.Curl()
c.setopt(pycurl.URL, PROCESS_URL)
c.setopt(c.POSTFIELDS, postfields)
data = BytesIO()
c.setopt(c.WRITEFUNCTION, data.write)
c.perform()

# transform output into a dict:
response = json.loads(data.getvalue())

# get http status:
http_code = c.getinfo(pycurl.HTTP_CODE)
c.close()

Note-The request id and the private key are obtained using the process your request in Odoo server .