{
  "manageEntity": {
    "action": "Save",
    "entityId": "2024219322",
    "entityType": "Track",
    "nonce": "0xae8cdfae95b964581916d97a83f7e1222d6f966828320cbf3d9d46cb10a9d3f3",
    "signature": "0x2deffb5e797d89fe5682d1cc76fba9416d221d47e6206fbf01488d6077f17a104f2fc6b50373fd872b7f34758c222a8cee804d53475cfa102418c28cbb569c221b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}