{
  "manageEntity": {
    "action": "Save",
    "entityId": "31131193",
    "entityType": "Track",
    "nonce": "0x2e871945c92110785c85e0f81265c5232e29ea25be3726aab9d364600001e3e9",
    "signature": "0x47a259d796910e9240ddaa1853eb266fcd105cce230d4950b424ca70bb952f166c62fc7649737b1ae81341d582d8c3355896037ec86b5aa87dd92e925b1cd6611c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}