sponsor.py

import json
import time
import requests
import base64
import ed25519

URL = 'http://test.brightid.org/brightid/v5/operations'
PRIVATE = ''

op = {
    'name': 'Sponsor',
    'app': 'idchain',
    'contextId': '0xe8fb09228d1373f931007ca7894a08344b809013',
    'timestamp': int(time.time()*1000),
    'v': 5
}

signing_key = ed25519.SigningKey(base64.b64decode(PRIVATE))
message = json.dumps(op, sort_keys=True, separators=(',', ':')).encode('ascii')
sig = signing_key.sign(message)
op['sig'] = base64.b64encode(sig).decode('ascii')
r = requests.post(URL, json.dumps(op))
print(r.text)