{
"manageEntity": {
"action": "Save",
"entityId": "133352696",
"entityType": "Track",
"nonce": "0xa3246f0b856d5687bacd4bb3bf961101a96f12b4fb98b0c9633b22de44153b05",
"signature": "0xb8f52ab0cda3d0344f03e8d46b77269f23ff1f3a66593454f45e15dbddfa436106af9edec1a45e0351b77289613e2f02b214c416d1f432e0c328c98af037129e1b",
"signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
"userId": "325172820"
}
}