{
  "manageEntity": {
    "action": "Save",
    "entityId": "863600124",
    "entityType": "Track",
    "nonce": "0x8082d7ce72a2313b10a01cb86eeec0d343bf3564073f6f4ef1bd3fe099f0aaab",
    "signature": "0x28780b5301ad9fed58c513a8423a4df11aca95b4a7ae67032c815ba281ae0f3e336b886d01c56cfe832a9f3091983eb8ae8067924d79fb1142266e2cc3b69e9b1b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}