{
  "manageEntity": {
    "action": "Save",
    "entityId": "1759306111",
    "entityType": "Track",
    "nonce": "0x795645c17f780cc52816b5da3dfec4f49b87cc3e306e0ab57fabb8de2563b473",
    "signature": "0xd377c1c5250a3d52d0729068a93571ee957135e7ae879bca25aa521a56adb5f0798abe094071dfbfa51c53b5f6f54f3a3b70353340ad97499630820b0b3799811b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}