{
  "manageEntity": {
    "action": "Save",
    "entityId": "119061953",
    "entityType": "Track",
    "nonce": "0x2430f8943424efbb9028eb424706389384b907c59dc35b43a9866baf933e03f3",
    "signature": "0x7927b6ed9bbe187480fd7d7be18802044bc61724f3b44db90758f8a479023daa398f0ab781b2238bac800106c043951b85ed082513ab3590ddad9bd226be08bf1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}