{
  "manageEntity": {
    "action": "Save",
    "entityId": "1085942178",
    "entityType": "Track",
    "nonce": "0xb021e38da7a4ecb9ce09e9e45534fe7e3f8ab95e98c9420209c5f8a3a8315223",
    "signature": "0x078cd4dd3c41fd0a988e730005732ae653ba0e5a6eda83af31bd4a5df49a982331824638affca6b29165c1905a7cb80ba024733a97d5264d8a8dcc7849e71ba91b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}