{
  "manageEntity": {
    "action": "Save",
    "entityId": "1436036192",
    "entityType": "Track",
    "nonce": "0xfbab4c6da1de580c6f3b9f0633b2a3a7d606da3e87e64a951c9b326e769e848f",
    "signature": "0x64d16bf25a795fab9cdf34a414686c0d4babd4086f671ed4f80525119263d09301433b4d43d9ede02bffe035e8231655465b01a4f82ad264e35d500b8decb83c1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}