{
"manageEntity": {
"action": "Save",
"entityId": "759945986",
"entityType": "Track",
"nonce": "1791565208918792367",
"signature": "0xef4921a46e4cebe0f42f90c89d954bd7625342569a2e856e0c7c7b91f88d3de641958d1629f0cb1197ec53d28efdceb037ca2c6f984b817b07dbf2bc087fde271c",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}