curl --request PUT \
  --url https://api.simplepay.mx/v1/products/{id}/package-grants \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "grants": [
    {
      "unit_label": "<string>",
      "quantity": 2,
      "expires_after_days": 2,
      "metadata": {}
    }
  ]
}
'

const options = {
  method: 'PUT',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    grants: [{unit_label: '<string>', quantity: 2, expires_after_days: 2, metadata: {}}]
  })
};

fetch('https://api.simplepay.mx/v1/products/{id}/package-grants', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.simplepay.mx/v1/products/{id}/package-grants"

payload = { "grants": [
        {
            "unit_label": "<string>",
            "quantity": 2,
            "expires_after_days": 2,
            "metadata": {}
        }
    ] }
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "object": "<unknown>",
  "product_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "grants": 123
}