{
"manageEntity": {
"action": "Save",
"entityId": "1383536779",
"entityType": "Track",
"nonce": "0xa03a8dfa019d0755586d8654df751fb4306bdbdea64361712c03064bd89811a5",
"signature": "0xb3c408bbdb11b27b465ec13c5096e4dc7b701a3004d048d2e334856cfa426bd668cd939482f171eee75f860f017f794f64033a32f1c314edefff52b25eda7e4c1b",
"signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
"userId": "377610060"
}
}