{
  "manageEntity": {
    "action": "Save",
    "entityId": "85483",
    "entityType": "Track",
    "nonce": "0x8040774f391020930e773265d2ad8cfa2908d4d6a6acdbbcae1763d0fe8bf852",
    "signature": "0x5cffd64b058a0879b1c137a9869153cc9f4d46b09bbbee003f305455fc90a6a30209f35bc5ca2d5d0b8e00d28ebdf21fffe9ac9161daa39912218bcb3047038f1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}