{
"manageEntity": {
"action": "Save",
"entityId": "359238586",
"entityType": "Track",
"nonce": "0xd6815301d76c785aa820bea68e2b4057a8e986a6612ac4393b4d54025a16636c",
"signature": "0x651589448c83adaceb145de1048e9712d23ab57235b6393b07285c32f6e5dde32f82c543cb7da1219a53d6dd555c280d700869845c7e6a31e64b146635eef3a61b",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}