{
"manageEntity": {
"action": "Save",
"entityId": "560725879",
"entityType": "Track",
"nonce": "0xfe9519504d9a47ccf0352369c1f6aed580c2349a33188e8165cb084ea27c1d5d",
"signature": "0x679261951ddf02f893ed1bfcf9b20748fb5aa7bf83d725dd2d531a1f5d5d6ef82882036d21ba175a087e10f7d1c44357746e5314a4010a2fada71e0ba44b7b081c",
"signer": "0x3D4d8a781454E2338c482dE697d6DE1ACc7D9031",
"userId": "599751364"
}
}