{
  "manageEntity": {
    "action": "Save",
    "entityId": "2126393791",
    "entityType": "Track",
    "nonce": "0x715bc6ca87b922c863ca593f718bf5fb1856f3d6d56b0871651c441de7b628f2",
    "signature": "0xe3f441853540effcb42652f7b5c7ab9cac86ee28899064f7a4213f01198f42aa7347f0212f5f579eacbf8ba63e762c4e124b4f7c2cecbc3c13d1305cbe9edcd31b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}