{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088211",
    "entityType": "Track",
    "nonce": "0xcbec6022f6299fb1a3806e2bdba89a894a80e3d6b12de5171feca92c39d7bd3a",
    "signature": "0x62180e3c62aee42be3bb3ffcb2adb74c675595823199aa608186f5355eb14a483a425521019451d4f1921e3f6c33589b50df2f96ad8e22d7f02900fc43497b3f1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}