{
"manageEntity": {
"action": "Save",
"entityId": "1458078217",
"entityType": "Track",
"nonce": "1792305517942945883",
"signature": "0x6bd9decc0ddd64d794ec58f72898acd558ed696588585ceb10c38cea0107ed284919ae06368d6861f81d887cfe0e3ae7e4184660d1a6e03573709d0ac84827341b",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}