{
  "manageEntity": {
    "action": "Save",
    "entityId": "2005017288",
    "entityType": "Track",
    "nonce": "0xae8e4cd228aeef36ae05cfb6355370548c1ad7310b776a72e5a5e5eeaff0c2b0",
    "signature": "0xcece60c5338244782b6ae06fb506203b4306bf5f762e7f22e09d7585b6fb070b5145cb878c1250e1bedc81903b3567609f817ff24196e1240ea83010dbd857851c",
    "signer": "0x38C35E6d98e3a8e47c96Cc5d8e8DC05C8797Ce75",
    "userId": "266305231"
  }
}