{
  "manageEntity": {
    "action": "Save",
    "entityId": "1120596",
    "entityType": "Track",
    "nonce": "0xcb3df7e72f8ef72e47cd0860af5db47e6de1eea0149efef0619d7d56dce9ae0d",
    "signature": "0x1d859afebca70252f49520c468a2510f3e732cf0cf3acc086b34bb85f6eeaa3e3d21279ccef60c580c26e03ea3c7077edad799519fb4ebf4414d9fd7ad3267341c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}