{
"manageEntity": {
"action": "Save",
"entityId": "314219485",
"entityType": "Track",
"nonce": "0xc0a4ecc9d846f6afa81af6b6753cb27632b7af1d4dfaa55a43b4ff1929a692b9",
"signature": "0xcd1cd9dda351d39eafe1d37948d301e0d826724e36b4be97d2a7c6b0c9b89f2d6c3803f1bc7d68b983b3869ae90d5455e154d6f0092cabc59e8540655358348e1c",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}