{
  "manageEntity": {
    "action": "Save",
    "entityId": "483702272",
    "entityType": "Track",
    "nonce": "0x38d482dbf4fa35131aa8d0a38873d5847a889197ea49effeafc09239bebb354b",
    "signature": "0xd5884301cbf6810812b14b5c3b13d48744885457246bea4898a662f300a7913e04cc70e88520f98bd1bd951a53666daec58bec793c20433f255984e0c9ac034b1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}