{
  "manageEntity": {
    "action": "Save",
    "entityId": "1054339315",
    "entityType": "Track",
    "nonce": "0x1db09965364b84fd87a7e321cee0fcab979a43a8ed6d126ebf31881a6c2129e3",
    "signature": "0x0369a7e84e2ecb41e48cde20b86bb5d1193e9affb9d102ff5b9572e93b85be1659227f7bca7421f25f73c7fdbad2e3b502d2b1829a3e37da49596f9e71d5b6e71b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}