Rbx-mass-send - mass sends trades to item owners

{
    "rbxCookie" : "_|WARNING:-DO-NOT-SHARE-THIS.....",
    "rbxId" : "123456789",
    "itemsToSend" : [123],
    "itemsToGet" : [456, 789], 
    "webhookColor" : "704191",
    "successWebhook" : "https://canary.discord.com/api/webhooks/987654321",
    "errorWebhook" : "https://canary.discord.com/api/webhooks/987654321"
}