{
"manageEntity": {
"action": "Save",
"entityId": "1269586208",
"entityType": "Track",
"nonce": "1794005360461559935",
"signature": "0x61d8afb584d18ce7eae675d731189b6edcac59f04ef93cc66c1a15dcb53c6056443ca035a2a2e776b7274caeb4cab786d83d8255cba8d7508d3449262e5a5c491c",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}