{
  "manageEntity": {
    "action": "Save",
    "entityId": "1718349533",
    "entityType": "Track",
    "nonce": "0x6d5dcb6b43f0f69eb9d30fbee7ea548813a439efe0d258e3df8aa5a8443e4fd0",
    "signature": "0x488b3415303a71e562f81f82df1da89b8e8558b7ed2f651828496c3f3e3dc47c11a0f11c3f31fdad4ee0914e6b65be4c2bc00b3b641d93d1f89f28b034d2cad11c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}