{
"manageEntity": {
"action": "Save",
"entityId": "517105059",
"entityType": "Track",
"nonce": "1792393708943559730",
"signature": "0xa9ea61d5066d720ac87f6d96a2059e4f1303147dc8098c675d9479d6fced258d5445684be8aabae215eb0b70c4b9ecd4901971ca97b6392569f84f725b67f72a1c",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}