{
  "manageEntity": {
    "action": "Save",
    "entityId": "169048",
    "entityType": "Track",
    "nonce": "0x3f4c2ff9369dff9914bd08a73e9d9c261d2832e9751503dc1b87a8dd8f45ed5f",
    "signature": "0xc673cbdfa12e1bb1d656160df1bb9e638eb5d508628fbe563d91ada79895006664029d5f01916603ed71305d5945f31d56e8a09ebb53067a33e7eb015f5572491c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}