{
"manageEntity": {
"action": "Save",
"entityId": "1511661517",
"entityType": "Track",
"nonce": "1792311769593312321",
"signature": "0xb0a05739ec265dee01a7c3e84fc646b06603e17aad0ae5977d84345597696d65663bda37704345111cc80b43e28e980a45ef3251ad2e0424f60c0ccbb491ae911b",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}