{
"manageEntity": {
"action": "Save",
"entityId": "329356866",
"entityType": "Track",
"nonce": "0x612ad272543b2e6645d7d212755c2c23a75a40df615a46648105c93ed2b314d1",
"signature": "0xa233dc9f8e5980afbd1aa1769d459aef1381b18382e3c37a3925b6b42546646f54f80b268f628a6971b7174e25e21db0e18fb682c87bf965b13b62f1809c36a61c",
"signer": "0xD5B0F0373A17EbC7A0Bd739abF050E09Ff7ba9AF",
"userId": "498691672"
}
}