{
"manageEntity": {
"action": "Save",
"entityId": "1456910212",
"entityType": "Track",
"nonce": "0xe74ebdd24c9db96487d5dbf7f3365c1fda87ba656f6ebd4644aab7bf4a0d4b27",
"signature": "0xff4f375d5c48b081d27238eada34f9cb5852baa22d1ce55e45aaec5c5a6d942a79ecfee1d1d9dd98288de625fc5dc230e36cf79de0b5870dde9e71264eda94791c",
"signer": "0x700192Ed1eAF4C3D6E049F3b29D1ce21365e61A6",
"userId": "980397349"
}
}