{
  "manageEntity": {
    "action": "Save",
    "entityId": "806709227",
    "entityType": "Track",
    "nonce": "0x8acf913c6d37eead475e5557199ad74c5285d8dc2b7dc04e71247159996660ef",
    "signature": "0x220d0a4be853737760fc55f3b6cc3582ccad9530b1386121f51b699b4db19f9b310610f00967bfc9ce1aa9489e64076765acdc073329482cfb1e304c10a729001b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}