{
  "manageEntity": {
    "action": "Save",
    "entityId": "1767653012",
    "entityType": "Track",
    "nonce": "0xc25bef92f7a9ae789e72043fcf8f634af19ba78b11b58ce9e7033f68942b376b",
    "signature": "0x7273b42fa6c129d438114fcafcb6ad12e742c4393998e4205e076b1b7392f0d365fd6acee8b2ca319f6e9ce7011cc6b3edaf0375fd9e40693f9ec889a8a916f11b",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}