{
  "manageEntity": {
    "action": "Save",
    "entityId": "1629906964",
    "entityType": "Track",
    "nonce": "0x955dd121b460ee5483821e04059d9890d1f07986cc8de2590e0d2e5db283a866",
    "signature": "0x4be2f51f90f852daf9ff0475482568b9eb787ac3b8ab12b77fb3d311e857bfa67e7fb8a2e03b3205f482fc723f1d79f2c74a21082d89109bfb1c8e1bd8e32d0c1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}