{
  "manageEntity": {
    "action": "Save",
    "entityId": "869623281",
    "entityType": "Track",
    "nonce": "0xd79abc28a51b3a74e7e0868cf1feaa7fb8e864a6509f4461541503c5549de2ca",
    "signature": "0x922ded36ef3e19019ce28c395f185db4cbb62ea57d4c60bd9a015f6347bac8f767cc5ea10e703ffaa98527905a5fe77e797ca28a5927df9211d6f53f80d5e5311c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}