{
  "manageEntity": {
    "action": "Save",
    "entityId": "1714457053",
    "entityType": "Track",
    "nonce": "0xc2f98cb73a3f986f56ec83c881d495f237ab647fc9211b44fb46d8289b4cf303",
    "signature": "0x7249141ffda31dfa04ddfda1e17c2c3a0af0ea5cbd189decdf0e34c1fc6ef903188eadf51b3c6b7f59b7398ffbf79242e4635d47f734e5fd10995322d8973b641c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}