{
  "manageEntity": {
    "action": "Save",
    "entityId": "860181230",
    "entityType": "Track",
    "nonce": "0x9292d6ad7359c6d57e5cc954216ab39a45014ee90c263b5dfd3bfae1337ac429",
    "signature": "0x2064288786e15c99d2c5dee00f64dfd72d869ce5032557b6f59bd7955d6415b940042d955fb1ded7d4caa2045ad43be3cd25e1ed56b296bcae831ac250d2dac21c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}