{
  "manageEntity": {
    "action": "Save",
    "entityId": "2011627490",
    "entityType": "Track",
    "nonce": "0xa15e6b8edef025cf2ea26ef8439f4e413e7346a4b3c952c2a7d78f72031160e6",
    "signature": "0x5cb7feb40270dc6b4f5bbd14e39b7e14a331e618d5c7ae3848065a1cc8a0cc2c268fd0f41f8d314f451e524d897ed1373e3b814fb09ebbc48931a1fba6c35af61c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}