send-sms.py

import json
import urllib3

api = 'https://api.soracom.io/v1'

auth_key_id = "keyId-xxxxxxx"
auth_key = "secret-xxxxxxxx"

target_imsi = '111111111111111'

http = urllib3.PoolManager()

auth_result = http.request(
    'POST',
    api + '/auth',
    body = json.dumps({'authKeyId':auth_key_id, 'authKey':auth_key}),
    headers={'Content-Type': 'application/json'}
)

credential =json.loads(auth_result.data.decode('utf-8'))
print(credential)

sms_send_result = http.request(
    'POST',
    api + '/subscribers/{}/send_sms'.format(target_imsi),
    body = json.dumps({'encodingType':2, 'payload':'Hello World.'}),
    headers={
        'Content-Type': 'application/json',
        'x-soracom-api-key': credential['apiKey'],
        'x-soracom-token': credential['token']
    }
)

print(json.loads(sms_send_result.data.decode('utf-8')))