{
"manageEntity": {
"action": "Save",
"entityId": "952812232",
"entityType": "Track",
"nonce": "1792343141690377115",
"signature": "0x42088b7cec7fab28b0d11ed95221d6d4be19bb8b498398d312da8178c63a9b551543819992090e4927ebe6d2f868e20d8b8ed3ec28fa704185cc33dd04a11b451b",
"signer": "0x512F9723ECbDB6Dc537A671b3D2fb35CC68017a4",
"userId": "105562689"
}
}