{
"manageEntity": {
"action": "Save",
"entityId": "1219007108",
"entityType": "Track",
"nonce": "0xb25d446130a856ec276ddf6c9a9fafc9e75af4a261dcc8baf105b3aba523c546",
"signature": "0xf242c5d954b7d6817f8443a6b50b6632e80899fa80ae21f27b165763da6919d07988a47865d8ec1869be97bc8f0d4879d342e9a10cccbba1cc096030f02180591c",
"signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
"userId": "636236864"
}
}