{
  "manageEntity": {
    "action": "Save",
    "entityId": "86333",
    "entityType": "Track",
    "nonce": "0x07b3c9ec40cf75a3a7f69afeb647939067dc4994b6f1c77730c251981c5ba5dd",
    "signature": "0x40a6f3b5f984780cf10c86a0cb81f76d2682e5cdd5a4f2adb50c4819924177fc6d87f7862a09fbf884352446a679d591ed323901cc22e3b102bab45414b9287a1b",
    "signer": "0x4D11c3319e766BE8ad4bD57B7E1C96300e25bcd3",
    "userId": "261446337"
  }
}