{
  "manageEntity": {
    "action": "Save",
    "entityId": "1703077233",
    "entityType": "Track",
    "nonce": "0x9a74ec0255db42813fba457ad4eed0e3283d5f9f39272767ddd0f2d61a69dc06",
    "signature": "0xc7bc043028b7e24579d190984845e5c9fac97a75b7d40380c4929e9823b9b2b5610f6e164b70b4be0e13d79937296be97c0be727a69e6060b6bea671698e2fb21c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}