{
  "manageEntity": {
    "action": "Save",
    "entityId": "250186",
    "entityType": "Track",
    "nonce": "0x6cb7bc2c9f6e0955e8d6c84889a612a1cacb8e496fe5a44e4f3af28b595c9fab",
    "signature": "0xf88997690c671b9f2e926dd2ea9b117444bdc35767cc2672adc27ce03b6e9a5c036e2239bcad76bc2521862560b6976db4c8aa8e5e6613c66b34139da3b650c91c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}