{
"manageEntity": {
"action": "Save",
"entityId": "463985716",
"entityType": "Track",
"nonce": "0x47fdd83615c5f7ac005eddab35c1d1594ce8c4e6aaced2a1446cd56e17039b35",
"signature": "0xdf2f25a665511306d0e2828416cbbcd4887601290f680b041841cebbb3ce05d762859c825320571de218dea175ce88ce70397e701d0e648bf3549030c94a43641b",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}