{
  "manageEntity": {
    "action": "Save",
    "entityId": "98885559",
    "entityType": "Track",
    "nonce": "0x5067de6e1c3d5713c2c1086264c330eae249741d6ec7d6ed68cb72ec2893eab0",
    "signature": "0x85433e02d0857e9161a247ceef1fe179a554fae441217bd7ba12a34f6e625d1641b89c6662f4fb2129ee926dfd48d253857974b39e2a45ba5df9f0573a7eb35f1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}