curl --location 'https://advertising-api.amazon.com/testAccounts?requestId=undefined' \
--header 'Amazon-Advertising-API-ClientId;'[
{
"accountType": "AUTHOR",
"asins": [
"B0123456789",
"B0123456789",
"B0123456789"
],
"countryCode": "AE",
"id": "ENTITY012345678910",
"status": "COMPLETED"
}
]