{
  "manageEntity": {
    "action": "Save",
    "entityId": "1205429998",
    "entityType": "Track",
    "nonce": "0xfe2afbd3277d5fc4f540107cf13e157b0fab409662f5f2ee52cd380df083cd76",
    "signature": "0x3a557e7807ed0667b9cf9cacd7aef20fabf21998251737670bfea6885c8909815047f97a23be4462b79aa8daa1edf5c99691fff69b7b9d3af57329987be4bf301b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}