{
"manageEntity": {
"action": "Save",
"entityId": "107925093",
"entityType": "Track",
"nonce": "1792465138945921212",
"signature": "0x46275c44704d6bb8d341ce4a8e998bca4be34ba3631694a5a48b269af9e7c5ef6c9144392b18942adf94537e945eb41c846c976b289861585b21aa26c27d334a1b",
"signer": "0x1007e09532BE90331E035838A9E2E0700bB9741a",
"userId": "329513359"
}
}