{
  "manageEntity": {
    "action": "Save",
    "entityId": "734212291",
    "entityType": "Track",
    "nonce": "0xd050a83d0fa32bbdb77c3f8f623a04e3e9dae3b5c1049bdff00e49c538512007",
    "signature": "0x3d14461ba3243799b874eec7a97da4e45fa78cf6948f22b9bcc7326cf6ae787742b6f3d8ac36108f02d263a684606840855dead897c00eb1ffc4ccc1cd22a5131c",
    "signer": "0x9881bA04eA95d8a4De5594aBC9DBd5c96F38eF34",
    "userId": "211307"
  }
}