{
  "manageEntity": {
    "action": "Save",
    "entityId": "1395797078",
    "entityType": "Track",
    "nonce": "0x016943dbb068de39e172fe1d6cd6e9e449a893d9d9e6196ab37f48abdad58d2f",
    "signature": "0xf98be08cccdb04c9b73d2e2d53fc0a848b6b71c8d65fbc2a0cec35c79607b8a8355c028897ad4157c527f321f3cdb762b0ef14e52c6312e6de8035d4815ebbb41b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}