{
  "manageEntity": {
    "action": "Save",
    "entityId": "1539115212",
    "entityType": "Track",
    "nonce": "0xa0ae70e6878f054974a58580f65d08042cd355b818a6dbc8186edbe8b9e22501",
    "signature": "0xa176d6642d655adf1bfdbb53f7f80454ce9a1f7dd4c5b418439544c8b37299757d368a6f1ed9b0e5173e9cbab3bd87f0b87ada29adbf36cf25764d47745bfbff1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}