curl --location --request POST 'https://api.postly.ai/v2/683594f9d6bb51f6b3000000/files' \
--header 'X-File-Size: 29994' \
--header 'X-API-KEY;' \
--form 'file=@""'
{
"code": 200,
"message": "File uploaded successfully",
"data": {
"url": "https://files.postly.ai/a.png",
"type": "image/png"
}
}