{
  "manageEntity": {
    "action": "Save",
    "entityId": "171981997",
    "entityType": "Track",
    "nonce": "0x1910cc8e44695acdafef1deaf21186f05909677861ec50c8adb29dc2962b22f9",
    "signature": "0x6739f6199aa7d8b3695938ab42ee25c95c5d2186963badf841d0ab512c9aa6765b1369b518da3b218fdc58938403f1848cfb0a6c74e8cf5a2952ab75d300e80e1b",
    "signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
    "userId": "803288761"
  }
}