This endpoint is used to cache puts in request.
Inserts bidId and accountId into json parameter value, depending on the modifyingVastXmlAllowed bidder flag.
POST the modified JSON to Prebid Cache, and forward the results to the client.
Response body example:
{"responses":[{"uuid":"94531ab8-c662-4fc7-904e-6b5d3be43b1a"}]}a: Account id. Required parameter if there are any bidders withmodifyingVastXmlAllowedequals true.
POST https://prebid-server.rubiconproject.com/vtrack?a=ACCOUNT
{"puts":[{
"bidid": "BIDID",
"bidder": "BIDDER",
"type":"xml",
"value":"<VAST…/VAST>",
"ttlseconds":3600
}]}