{
  "manageEntity": {
    "action": "Save",
    "entityId": "1995362137",
    "entityType": "Track",
    "nonce": "0x47a4187837d69e488f758b7aac75717205e14aef18c97ca1f24a81f88c472c8b",
    "signature": "0x06f45b513add81106267a00d7fe83d2a4cdee62b04a2bc541e7fe6ee40ae141217ed74d251202d9a349be6a6c609dc4b2b07a7a9a22803b9bd1eae4ff398cf8f1c",
    "signer": "0xd1bC12b8b46f2FAa152aB791052b4a26826F86F5",
    "userId": "481080235"
  }
}