{
  "manageEntity": {
    "action": "Save",
    "entityId": "256713827",
    "entityType": "Track",
    "nonce": "0x83561371d6dbc51a8d5103d738764656590c3f114f16fdfff6b105c15eb83a0e",
    "signature": "0xbf9f7a535dd8a398a117db659b284b72005ec645bbfd8a101517734f7e2deb067e2cee0ef932c14c6453b713f64b9527b3dd35a181cc76ae9b6e1e0274d099941c",
    "signer": "0xA66d5981794A5e084FBD9adBFF28F465924fb9a9",
    "userId": "980224167"
  }
}