{
"manageEntity": {
"action": "Save",
"entityId": "880331160",
"entityType": "Track",
"nonce": "0xbba251cae9b6553b337946d5cf07bc9a21843fc8e42e2c9dc28f1844e2eb5736",
"signature": "0xe54c00af79d88390e1872f9b949fe29d268897fec2f1c68e46050392f3cbd6730cbb170bcbb1faedade9a2640a0dafbcb6258dbc1e4642fe07c554be2d64f73a1b",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}