curl --location --request POST 'http://authvaultix.com/api/seller/?type=extendexpiry&sellerkey=7963cedb37a52a5ca9d8a0d6cd2d36ae&key=undefined&days=undefined¬e=undefined&format=text'{
"success": true,
"new_expiry": 1789387200,
"days_added": 30
}