{
  "manageEntity": {
    "action": "Save",
    "entityId": "1762117306",
    "entityType": "Track",
    "nonce": "0xf9618f60476adefb778f91612bdccd3cf1926f8295ccec35d611741215105293",
    "signature": "0x42923356c66a6810392e27bfcf33f9d179f1b18ffea00c658d643bef004cdeb4605223545c498d043699355c34dd70f3bd9c1b0e0e9d4bdc0c049becf5d502851b",
    "signer": "0x222534475146193b99B68F2E3830ED2b44307C2D",
    "userId": "991417453"
  }
}