{
"manageEntity": {
"action": "Save",
"entityId": "1505848488",
"entityType": "Track",
"nonce": "1792530675386969860",
"signature": "0xb93bf0b5e628e6ceab3a7f583d34cdcc847ae18d33c99f7199deca199f725bc43b68fb61448b07eabe7aa2952210825c127de53aee510382939b90b28bc25fbd1c",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}