{
  "manageEntity": {
    "action": "Save",
    "entityId": "828197700",
    "entityType": "Track",
    "nonce": "0x856f325577c3cb5508dcf00a99581607c7c13e43bc53eda23b4dd27ff20aac8c",
    "signature": "0xf79df111b8573457f1fe7aa840fa48165050e7955d136dd2ddd5a19c0de46dc5501a2dac188d34d90a7cf1b73e269144e987a17aa97aa81e366d3773d97e570f1c",
    "signer": "0x4Aa8154A33F33394BA8De574d71aC98Ba6A47D5a",
    "userId": "645720561"
  }
}