{
  "manageEntity": {
    "action": "Save",
    "entityId": "41693117",
    "entityType": "Track",
    "nonce": "0xf0d612597a85a59ff723721b3f1ed37c21ebe685f80dd3450e5e3785bba71fc7",
    "signature": "0x3d6c5ba85ed36b20b96b3ff43d9d14b31dbd0f6730da92e18a723550d2bad487114feaec2d1b52580d50cd7a4243c280a6d00f83c57824cc866335b49ae683921c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}