curl --request PATCH \
  --url https://api.firma.dev/functions/v1/signing-request-api/templates/{id} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "description": "<string>",
  "document": "aSDinaTvuI8gbWludGxpZnk=",
  "expiration_hours": 2,
  "settings": {
    "allow_editing_before_sending": true,
    "attach_pdf_on_finish": true,
    "allow_download": true
  }
}
'

{
  "message": "<string>",
  "updated_fields": [
    "<string>"
  ],
  "user": {}
}