{
"manageEntity": {
"action": "Save",
"entityId": "563479274",
"entityType": "Track",
"nonce": "0x44cda95b9664499005be338d7a182c674891280c5341e8ade61f35d2cff80545",
"signature": "0xa0f7409d76cf46f84bc3c1e37a28a26d75e74041e0ad953b354a25b832c5be456dddcd5892db624127f9c142ff399ed253d581b7c2bd11b4f84553544d335ddc1c",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}