{
  "manageEntity": {
    "action": "Save",
    "entityId": "1091380402",
    "entityType": "Track",
    "nonce": "0x64fdc395a5331fc891d53f82e2325ded3fac63302af3c56700feaf0028a637f8",
    "signature": "0x8839aaa6a33bc7a710a7e73c9c904ac3f33c28481f35e0bb378e8e7fc34da00a0365af371e2ff328574071c7afd192ebeed02e887e4884ab9edd1264d15ffc531b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}