{
  "manageEntity": {
    "action": "Save",
    "entityId": "195931964",
    "entityType": "Track",
    "nonce": "1792087151650844909",
    "signature": "0x7cbaf3fdb28ecdbda0f0169a9dba780f7f484c1c9e1a78322d7afcf5312b81992b7ba64b375ca21a3e945210d88df8cf0fc2151e0c7f0e7ef8738893dcfe27d41b",
    "signer": "0x512F9723ECbDB6Dc537A671b3D2fb35CC68017a4",
    "userId": "105562689"
  }
}