{
  "manageEntity": {
    "action": "Save",
    "entityId": "401548",
    "entityType": "Track",
    "nonce": "0x266632aaf8074a9087ebd16980afb6db94efc26a4dcb46d73b705db00142b448",
    "signature": "0x857d6c54f3ede85eb63830e34119ac2609067c91b9fd3418d2c6db73bb4c0246532aac24a064136f78809a69b21eef7c387f154993eab0f84980f102073d67d01b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}