{
  "manageEntity": {
    "action": "Save",
    "entityId": "1745953830",
    "entityType": "Track",
    "nonce": "0x6c1476831e8f2636fd9194d297b3803e55dfb30bf01ef41eb9c45eccb0db01d9",
    "signature": "0xe007250d96a8ac7f69f114057ec176b3f55ba68188f9e99826117e467962238559d134ad8b4dbf4e3b06d07818c2fbfdba9ddd2f1dab1579229acf7f0681185a1c",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}