{
  "manageEntity": {
    "action": "Save",
    "entityId": "1486706684",
    "entityType": "Track",
    "nonce": "0xe948865f7fee2a708eb4b8af4badd32a02a412352a483c39fbd38c5827b66015",
    "signature": "0x0621147a522f9a3809af8479cced130f29397f00ecd467c66f87d1fe42ba4f1d1758cbc57a836eb6a4c57d0014b717f996414dde24d1bd7ab8d97e552f4105641b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}