{
"manageEntity": {
"action": "Save",
"entityId": "694725",
"entityType": "Track",
"nonce": "0x179e695bed786531a162b7e890f32d0f23073eee7bf03551b3c7002e0d74abd8",
"signature": "0xcf43ed4f455d4533ab35ba7c33c72f234f8881ba66b8a951e918a02c966555970e7769efbf1391ae725f98c034c078e2373008d869ddd1ae19fd00a1d567a0741c",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}