{
  "manageEntity": {
    "action": "Save",
    "entityId": "1011781",
    "entityType": "Track",
    "nonce": "0x7078e108732d4d16a9913ed112e5a97c0d45e466fa2004c88deba8ad52425bb4",
    "signature": "0x9ddfde3527e950839864f8fb30fb74cce511275568b564af3f56be859e21d8fe41b7d3923b5ea3f73f76565a2f365e9c4790290a8984bc0546acd6d7c50e8fdb1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}