{
  "manageEntity": {
    "action": "Save",
    "entityId": "1345427244",
    "entityType": "Track",
    "nonce": "0xb04f278d88692dc7b99b2d999c5fdce80bb432fc2685816eda544d71e8fe2571",
    "signature": "0xa4400a0af679667aa9409b681fd889436ce5cf6277d7615629f5d0911704893d14bda52c95657378e9c40b8450084ee9b2b2c5bc17c1936f6e639c68c56016341b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}