{
  "manageEntity": {
    "action": "Save",
    "entityId": "468130493",
    "entityType": "Track",
    "nonce": "0xe68a4d78a9b1ab3ed55d9bfe00010759a4f4a6e91a5e63c88aca3342d7964ca1",
    "signature": "0xaade802bcf33910c0c52e3b3d5ff080237700258b96c6b50145528ec862309984c283d28aec4566232bf65d5ab935a7d2c0c3fe9f34c093cfb06762d2dac29f01b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}