{
"manageEntity": {
"action": "Save",
"entityId": "856487872",
"entityType": "Track",
"nonce": "0x91851226e769d4fd273d54e9d32324c6d1e67748115e9c66c9839ead2c955de2",
"signature": "0x0bf7b98a24c1fc863485b55e141fee67a215da75c50b5a6795d97ac163f8841f7cd501d0913d19b7f9e9adf10988562f2588ac95580e7ad939a2ba0684c176941c",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}