{
"manageEntity": {
"action": "Save",
"entityId": "538391113",
"entityType": "Track",
"nonce": "0xe0fee7ccc4b7140c89177aa1c91665b4276f7d18d8212750f0c200bc6f24bdc1",
"signature": "0x12ec5833558854c7b52205cbb2e2100ff79dfd281517ee42b2ac4d9c8a68eccc75a5fe4b2fbeddb27b63b8b752b3a5eb241112f9c7bf4475896d95c337df9ab51b",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}