{
"manageEntity": {
"action": "Save",
"entityId": "1896875844",
"entityType": "Track",
"nonce": "0x388986174cefde6f62fc5670ba2b696d0648df89aec29bddc92fc54bcd58f8d9",
"signature": "0x1f6e841c179fe4e5594dd839cbcbe7ae5b5e55e16435e97a334b689a3ce1bc9578b93dba86dcc86b4b346fcbce7a4c3eea902bd4a456e4cc5471732081bdbb241b",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}