{
"manageEntity": {
"action": "Save",
"entityId": "888175078",
"entityType": "Track",
"nonce": "0x72b7a7f967be781c74b9a5965b4408f011e088e1d83ec931a6473553d32a8778",
"signature": "0x8ac840b16603341b6edd73e06725f5c0612a49b9699668e7a1a8413f2a7d4939571616ca3e8dd4a0277613bb7a011a4c2b2a7442971837725c6c5a16bfd857111c",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}