{
"manageEntity": {
"action": "Save",
"entityId": "516611142",
"entityType": "Track",
"nonce": "0x0d3732277b1afb269c3b9879d06691dbc86a1cc489db6a80c7a15474c122e195",
"signature": "0x31d5144a17e6be07b3e9909f3aa637bf5857f2bfc499093620c5ca55ac6ce9ca0e85c145b38f9e50b72f5fafe5970d5a2617c6c8ca4eddaaf536406423cb20631b",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}