{
  "manageEntity": {
    "action": "Save",
    "entityId": "326505",
    "entityType": "Track",
    "nonce": "0xd05f826cf2e0d66ddce6aab82f52dff75906a743a6b749c04eede478701ada94",
    "signature": "0x9ea3a0d17e4f0606e886406565b69ada701153691f8e8960e4affdd57d36c9042fd4af4a7093d1b3eb9fb68d272d66742d1fe80361dec22a9768a172b2dfb4791b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}