{
"manageEntity": {
"action": "Save",
"entityId": "197080487",
"entityType": "Track",
"nonce": "0xc2778947319dd4a121c079e39820ed9d0daba47b5c1e5095845882553246f0a7",
"signature": "0x9fcf97bce05443ba84f0c30120cced6b3874727ae295607f7f7c7547cd0405877533c32704e9241b9027021d00dcb98f5361c6f376f3f026dafdb3f21cec6e9b1b",
"signer": "0x75647f568e0a3C7594Add477c1BC9CBedBeF7B42",
"userId": "795494717"
}
}