{
  "manageEntity": {
    "action": "Save",
    "entityId": "77826016",
    "entityType": "Track",
    "nonce": "0x9b505ca3eee7ca13bfb107417d940b464d4d17ec0d18cbb4eb219c534fedff8d",
    "signature": "0x84358c83c542e24064ca73e54f78db03890f83f1415a18777efa72fcb9014c230d4402ba5ada31483ce94cbcec34e3a2e3f42c5fcb2b753f8fcf53b83d16722c1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}