{
  "manageEntity": {
    "action": "Save",
    "entityId": "844103972",
    "entityType": "Track",
    "nonce": "0xde2966fef94ff685b2ba25d7714888be2655ba24adf4826215c528cbb2706c5b",
    "signature": "0xfe17e57d1ce90c052ce364c38c46d19ba07dedbc7df9ebb851c70e8f487eedba5cff5fc99fa62a8e329e2b254a882404e14c7823ff678f73f5a061e4ecac3a6a1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}