{
  "manageEntity": {
    "action": "Save",
    "entityId": "1019292966",
    "entityType": "Track",
    "nonce": "0x254073da1269e125e26a82abbd5dd12137661062399594a65eea09fbd05ad146",
    "signature": "0xfdb1693a0b70ca42898b18a998d5d135c0efddcfdbab359c0b22ba75b75ce6375745090665aa7bf03a36951bede5126ddb4ae357a94a56ecde36fde3c314543a1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}