{
  "manageEntity": {
    "action": "Save",
    "entityId": "824222276",
    "entityType": "Track",
    "nonce": "0x42c79e4e39915443eadd77a2686d60f075c27870079855e0cd918e9614ddd7b5",
    "signature": "0xe85164ee63e5861165714d92b2c36807004d3dfa4727914385e506a0438c99c872af0a1c946adee6caf3fc6fab1e33da1e60447db9e93bfd59d6b982d45debc81b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}