{
"manageEntity": {
"action": "Save",
"entityId": "616889494",
"entityType": "Track",
"nonce": "0x3725b6ef9e40a6fc13b13bc1b8c39840c43325afb44f2501d94a4b11d4e57d2d",
"signature": "0x31cf0764a44aca3ed02b10b8173b162f4f64b17067b7ad3248dc5328d3870d3272ece487fa41d5a9e3845d02ad8a7050c2ee089ec763cfd80c2885a836a40e771c",
"signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
"userId": "92019297"
}
}