curl --request POST \
  --url https://olive-gateway-a6ba.onrender.com/api/v1/cards/child/change-pin \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "card_serial": "OLIV0002",
  "new_child_pin": "9999",
  "old_child_pin": "5678",
  "parent_pin": "1234",
  "parent_subscriber_id": "parent-uuid"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    card_serial: 'OLIV0002',
    new_child_pin: '9999',
    old_child_pin: '5678',
    parent_pin: '1234',
    parent_subscriber_id: 'parent-uuid'
  })
};

fetch('https://olive-gateway-a6ba.onrender.com/api/v1/cards/child/change-pin', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://olive-gateway-a6ba.onrender.com/api/v1/cards/child/change-pin"

payload = {
    "card_serial": "OLIV0002",
    "new_child_pin": "9999",
    "old_child_pin": "5678",
    "parent_pin": "1234",
    "parent_subscriber_id": "parent-uuid"
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{}

{}

{}