{
"manageEntity": {
"action": "Save",
"entityId": "606393400",
"entityType": "Track",
"nonce": "1792511033425798491",
"signature": "0xed19e136caf5e9a95514543c8752e930ce7ebbb77b1695595a1fb2a06a09ef7258086c48f2bfe59dee61e5574905e85dfa5bf765be96b4f8d9f4d5602aabc4f51b",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}