{
"manageEntity": {
"action": "Save",
"entityId": "1934594653",
"entityType": "Track",
"nonce": "0x562c64316309151c75083fcac58c4cdf1ae5c38a6dacb12c6842565c00ece70a",
"signature": "0x1044a76b2ec1d518a612e3a6203d763f3aa8085a3f49e0c2548f6f114de013af071861443aeed2ba0de9246faf82025032a52a6717633f62196c2fe5c16e28561b",
"signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
"userId": "887547386"
}
}