{
  "manageEntity": {
    "action": "Save",
    "entityId": "271470707",
    "entityType": "Track",
    "nonce": "0x9e826f15d2e1f6f79718cdb78961fa55ccf69381de561a5222279fb49286e7a4",
    "signature": "0x5b99860c0b02c2ca268c6fd2da8578626255d82995115384f1a6b9d2cbdbbc3237491983bd0a7d82aeb5653fb7b1fa7b278fd7503b2ca8a6d817819464898f571b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}