{
"manageEntity": {
"action": "Save",
"entityId": "464183707",
"entityType": "Track",
"nonce": "0x39249e7b8a35c57fa57cc864216560a0818bc90231fc1705ae4f409a916af00b",
"signature": "0xa4eb5c3280c7a0c978bbecc6f96d4f2dbbeda962d7b2fb02d29b8466c97f29e427f668831aed9ab5c04407f1f1a41869cbbf32047f2f8afdf2fad2ccd1c7d7e41b",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}