{
  "manageEntity": {
    "action": "Save",
    "entityId": "1728593347",
    "entityType": "Track",
    "nonce": "0x9e1ab53cf841a32f7ea3604c56a955620495f181ab2b20a58bad33015c9282c7",
    "signature": "0x0a0a0c111ee01cc08145a917150c07ba8cc879e1954394ad05d97e6acdb626502f0729bd96818ce4c9f2b1f2f8343e756835ae13059b9de332107081dbb02f3e1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}