{
  "manageEntity": {
    "action": "Save",
    "entityId": "2112936203",
    "entityType": "Track",
    "nonce": "0x65b0aa8b4d7dfb00dd1802c0c776333a8b4e830c0dcb2fd24d014a172b415421",
    "signature": "0x4ee193ecfe06a8da08573196d2d29d46cb95564ab917bba2e408582e261be805340bac3189a2c9f51ab4149d0bdd3daa2000e7efd2bc51acfde4db08e8ce1de41c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}