{
  "manageEntity": {
    "action": "Save",
    "entityId": "1209691595",
    "entityType": "Track",
    "nonce": "0x9128c40fdd97695aef779d4f93bd2ba7713071cc9ae866c40ce1c4a32f4377f3",
    "signature": "0xe7ac9cdd348101b8f429adc0e41c16fb3775b7f3814a56812b7ad997c109c66650b189a3aa88a7154713c27e72ac7099b5cb8c653cbce1c886edb15c2ef012001c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}