{
"manageEntity": {
"action": "Save",
"entityId": "60348817",
"entityType": "Track",
"nonce": "0x0fdbe23926ee97e10069e221713540273cd564584d35fde5f3f9f7e4da949535",
"signature": "0x12304e59d680f85613ba21ed7579565477d2ab58ce37521037537af41c18077a39217fceec5bba9ea897e1a4e4a9a6b0f10271b607f4f326c4e15c40308d8b251c",
"signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
"userId": "490478463"
}
}