{
  "manageEntity": {
    "action": "Save",
    "entityId": "1396396743",
    "entityType": "Track",
    "nonce": "0xedbc800705ca47dca11fae800a54f0c3c836011c8f409d9a389708a6e319a849",
    "signature": "0x224f64377a4507f5437e516ded2bbf5258227b4f181be44b3660da293c6ad7bb7d4f1d2b59c028dd473f1cd08e7d040c4d220bd9f6e9bcef1d4f114ba851af751b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}