{
  "manageEntity": {
    "action": "Save",
    "entityId": "1924564487",
    "entityType": "Track",
    "nonce": "0x330fbf7fa10a9e899d544272bbac650150821b4c57581062beed9e9b98876232",
    "signature": "0xc96d0c2a4e29fa27dfb202e564627651fdd75897fac370f027c5ce329bced907564f149f0d4237de0ac7b6139e234beb50e262a6b1ed6c1c137d1d223977169f1b",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}