{
"manageEntity": {
"action": "Save",
"entityId": "1404633047",
"entityType": "Track",
"nonce": "0x910ead672f6121a9664751c73d5899dac8ef973aceb7b22ef5b9e32e07149650",
"signature": "0x22b9ff690f679b50bd54c0f7e09fa06924348402ac56d0c744c8b04b75676c9c0e1c103c498259ee4358e76e2279e70733e225476b80c3d219382487b6e01d2f1b",
"signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
"userId": "490478463"
}
}