{
"manageEntity": {
"action": "Save",
"entityId": "467941934",
"entityType": "Track",
"nonce": "1792762344950525448",
"signature": "0x7d77482db31ba72a1aea2ff920892a6da236308f86ed6dec8f817827f3976de60474a82bbe542154275e13aaa36a47fd7e9ffe49680e6639dc6b748cd53593d11b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}