{
  "manageEntity": {
    "action": "Save",
    "entityId": "1689537966",
    "entityType": "Track",
    "nonce": "0xf9fdb60ade20fc771797cf9f1160a5b9eee1cddc75c1f776d1f67dd6ec40a1c3",
    "signature": "0xad2ec22247e8c5b806046d3527ce7505957d1842fdc87b5bfa44f937ee668dce60557fa8d70c620a445bae3fde68e7bdc58691b7ca48395cbcef471d1076fcce1b",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}