{
  "manageEntity": {
    "action": "Save",
    "entityId": "811437240",
    "entityType": "Track",
    "nonce": "0x3a4d691daf0d226dbb76fc10af32deb635f0d24caeee7b17cc466b9ff0f5cea1",
    "signature": "0x6888e082bce035d3d9e0c4f48f268641768c784ca9640bf3a8715ea3abf32f84780d846cb7e02e4511faf6f2393a5a525aaf0289bc12156231d8f5151c97f53f1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}