{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf8e441f3736e795d3de0e6d4449dcb2f7922aa6057b8ca6c481e7b8c6ebed443",
    "signature": "0x5856c51df08ba01e2cb573720b43ed28f097ea52552694f43272674207f093f579909e6424986b6d9adb5728a819c98db451d3cbba98a74a56d97968d56d67e31b",
    "signer": "0xC0f8D2C092ae50e1512d827eBeb817e1ea4112E0",
    "userId": "451729998"
  }
}