curl --request POST \
  --url https://resale.api.sandbox.bango.com/topups/entitlements/{entitlementId} \
  --header 'Content-Type: application/json' \
  --header 'X-RequestIdentifier: <x-requestidentifier>' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "topUps": [
    {
      "productKey": "MUSIC_10_DAYS"
    }
  ]
}
'

const options = {
  method: 'POST',
  headers: {
    'X-RequestIdentifier': '<x-requestidentifier>',
    'x-api-key': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({topUps: [{productKey: 'MUSIC_10_DAYS'}]})
};

fetch('https://resale.api.sandbox.bango.com/topups/entitlements/{entitlementId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://resale.api.sandbox.bango.com/topups/entitlements/{entitlementId}"

payload = { "topUps": [{ "productKey": "MUSIC_10_DAYS" }] }
headers = {
    "X-RequestIdentifier": "<x-requestidentifier>",
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "entitlementId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "topUpsExpiry": {
    "ts": "2024-05-18T03:12:23.122Z",
    "behavior": "SUSPEND"
  },
  "topUps": [
    {
      "topUpId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "productKey": "MUSIC_10_DAYS",
      "createdTs": "2024-05-06T14:37:54.324Z",
      "startTs": "2024-05-08T03:12:23.123Z",
      "endTs": "2024-05-18T03:12:23.122Z"
    }
  ]
}

{
  "responseMessage": "Variable error message providing more information about what went wrong",
  "metadata": {
    "responseMessageFrom": "BANGO"
  }
}

{
  "responseMessage": "Variable error message providing more information about what went wrong",
  "metadata": {
    "responseMessageFrom": "BANGO"
  }
}

{
  "responseMessage": "Variable error message providing more information about what went wrong",
  "metadata": {
    "responseMessageFrom": "BANGO"
  }
}

{
  "responseMessage": "Variable error message providing more information about what went wrong",
  "metadata": {
    "responseMessageFrom": "BANGO"
  }
}

{
  "responseMessage": "Variable error message providing more information about what went wrong",
  "metadata": {
    "responseMessageFrom": "BANGO"
  }
}