{
  "manageEntity": {
    "action": "Save",
    "entityId": "1627994557",
    "entityType": "Track",
    "nonce": "0xc5457d3bfac3e5c07bab3601dbfef4e9407ae78716db8b21453e9a687ad6453b",
    "signature": "0xb0c566a0e00369c3a90d9af11aca9388ad49fd56fd1310cf8541c1be260ae19e74cdff2a2c00a98be9faf98cfb72f112183ec7628651bd70e84060b8b5ac91e71b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}