{
  "manageEntity": {
    "action": "Save",
    "entityId": "2052438445",
    "entityType": "Track",
    "nonce": "0x01fd741cf5cf10066e8541ec88ad9f92b23a3a0d0dadbecf0c346a22014b9aca",
    "signature": "0xaaa0af48a63922da7e971e021d5a811961d22cf7bc74fc0b525fa24b7dfe3ed43aab7fb6b416b8775eac45e0de2039d6340b23fd3f6ee526f4b0aadcd59d279d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}