{
  "manageEntity": {
    "action": "Save",
    "entityId": "316970753",
    "entityType": "Track",
    "nonce": "0x9ab075b75ce477a26e615df1475cdfee2e41b3b718b19edf0fa06e0ac83024ed",
    "signature": "0xa0495de658f236e02b4cd85ab9768601fa02b525449319ba1ec2953915885a8912ae1be50ac7a44debd7906b503a705b41471738fbc47f249715e8fc06c913321b",
    "signer": "0xc0621be31c1D1B62b94F2d48eE34dD3c3dA9D57d",
    "userId": "161438318"
  }
}