{
  "manageEntity": {
    "action": "Save",
    "entityId": "32418",
    "entityType": "Track",
    "nonce": "0xc91e97b21a4a033293cf240787eaebfe6b2e992634d0f4f0e045a6c7d794fce3",
    "signature": "0xb48bba989afb584dab079f339e9294a47a25002b19329a142b450057730062dc06cba0ae5c126d2fd18ec3b7c4f5e0bd4e4e93d21a612e993664230d6ea0c88a1b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}