{
  "manageEntity": {
    "action": "Save",
    "entityId": "788640083",
    "entityType": "Track",
    "nonce": "0xf1d84ac2e70a56e3058ca3a16a8d2c53188858f4e231a5e38b352b49845a9682",
    "signature": "0x48c7fe0db44cf7edef89539f9d52779592a617acc29ea842c9904cdc126102cf10ceb508b666d2aa998a7ef7f46428287622d9477a111e04093f9c2c77adb65a1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}