{
  "manageEntity": {
    "action": "Save",
    "entityId": "1578788918",
    "entityType": "Track",
    "nonce": "0xbf877363af6122808334bc907b8a66096fdf065b4a8b8d27e7fc21f716fd3f46",
    "signature": "0xe22af0fccec5bd17966aad25c6f2fc872ad13e6a60d142350e057bb34300fe7431d8a25bf6f372501e618c85897a48d2086442b984950ae798122f022d2606861b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}