{
"manageEntity": {
"action": "Save",
"entityId": "418231703",
"entityType": "Track",
"nonce": "0xa3bc6dd76a6280b9b7dce6df9d7c1559cb65859e553b38aaccb368feb0b4102a",
"signature": "0x76e49f08c329db25171a655505f440a8b94959891f2315168bddd7fff5664fdf316a4c6d661d78402e92727703a0242dd23db02f41469084eedd7d95c22b1d731b",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}