curl --request POST \
  --url https://api.headlesscommerce.io/v1/admin/uploads \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "filename": "<string>",
  "content_type": "<string>",
  "content_length": 123
}
'

{
  "upload_url": "<string>",
  "public_url": "<string>",
  "expires_in": 123
}