{
  "manageEntity": {
    "action": "Save",
    "entityId": "81240",
    "entityType": "Track",
    "nonce": "0xf85c1e81ac7558828e8b144a51a90e3ded59ba795d59630f62c81fb8e06df290",
    "signature": "0x00648dc2b9dc76917c3f43c674a038f416a0e58eda79c3c187c5c8480d889d9853c3117fd26795bfa9c88a0920215b7a593c5214525f545284a5bf3f2f22a2931c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}