{
  "manageEntity": {
    "action": "Save",
    "entityId": "129994810",
    "entityType": "Track",
    "nonce": "0x92ad74337a47893cc5a72b2ce27c45c0af85c999d2b8d198cf5f9cd1ddc12507",
    "signature": "0x221b75e6bec1f9e54dff6fdc5c0fbd82ca3216eaee7318cb91f401cafc24c1cd2997e797e9f7287b1e987ef389a320f1a0b2bd8cf9e7bea37d0a542439803b961b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}