curl --request POST \
  --url https://olive-gateway-a6ba.onrender.com/api/v1/wallet/balance/{subscriber_id} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "pin": "1234"
}'

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({pin: '1234'})
};

fetch('https://olive-gateway-a6ba.onrender.com/api/v1/wallet/balance/{subscriber_id}', 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/wallet/balance/{subscriber_id}"

payload = { "pin": "1234" }
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

{}

{}

{}