{
"manageEntity": {
"action": "Save",
"entityId": "1304893786",
"entityType": "Track",
"nonce": "0xc4969b79d56e4243730d53c25ab9fd1514c577620297f576d774bd2310d816c7",
"signature": "0x908bbf9cb82bcbd74c74551882884a441e8d60fd2ba30f8d0372e628f83b0a561844bce2fb5b4b93734db89f13407fb7cd17ae383250438d0850f6b5ca8af4401b",
"signer": "0xc92A45F289B4d54D7984dC5Ad135bfE417ce4a27",
"userId": "4396"
}
}