{
  "manageEntity": {
    "action": "Save",
    "entityId": "1347159880",
    "entityType": "Track",
    "nonce": "0xcd37f81ed251611a512feefdbc9d2b6513cb113762bd8faa8a2d35dd7b07630d",
    "signature": "0xf341ea61e469a737dee9a1f86705d53178543ab82a0e3d5c496ab8233721bd6453b854cdfa98d9e904bb796af35d0350927f3aac047af65426331e99fb438d6a1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}