{
"manageEntity": {
"action": "Save",
"entityId": "929069468",
"entityType": "Track",
"nonce": "0x61406a2bff2c474748c42e9b0023b128eea477e5a43bb16e7e72ec15cfea85e6",
"signature": "0x53c21559950bffdd313fb8f7f3a41a4f4b784692fc1097a9d9ccec1e26cc8c4f501f05a2721b9aef76ec54d410fe67092f8ea63f0d33044eacad86f61805a9821c",
"signer": "0x2bB7E42Bc944D023113eB9E0FC10079AEe4E50f7",
"userId": "35744067"
}
}