{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28749",
    "entityType": "User",
    "nonce": "0x9521fde3b67f34366d75f768f30e5068ed7e91cf25569bed214e061a84f9ff81",
    "signature": "0xc335b934e9f9d9a087119452a01155276f165bef37f940aba093e9925afa26380a6560d34a5a921df5c892481e2753dae8e3eeb8a8cd8847c280ef25c807289c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}