{
  "manageEntity": {
    "action": "Save",
    "entityId": "192806",
    "entityType": "Track",
    "nonce": "0x042e7edf0f6912f02ca8aac6d61e6bb53784bd89c71f62e45a2719e3ba1ab477",
    "signature": "0x5b87bb2d1463780d376973f512285944eb9faaa986dbabcfc2ea3546f8f77f844762c0b46c5f73482f9a4bed42b8321cb9c2bca9c454e6e03b190febf9600b0d1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}