{
"manageEntity": {
"action": "Save",
"entityId": "1932640155",
"entityType": "Track",
"nonce": "0x653387342fc760ca24e04949f5af551b06c3dd979cde514a0795bee75cb538b1",
"signature": "0xffe5db9893ae6a153caeeaef73ff8702aa30ca2d1daff51ec3df9368e32a28f96fa79da28265b7f9d53b49ced0ae94853928809543bb25b1ca09a4a6ac7cc4bd1b",
"signer": "0xa9b6e6a3C2E560E525ae460d43e2321Ac2dD0dF7",
"userId": "376612608"
}
}