{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x680a264fe3146d34a72fac5bc7c4216b5c1eff74adb8754dc138415cceed465d",
    "signature": "0x5e05486075c5d05badc97160e07f50ab6ca1924835d2b37e3e1fcbe793b555bc44b1fe068e75972086276c20b465d289f839fff75b99a7f26f3a563611dbcba31c",
    "signer": "0x6f6aA6cc738Bd5A8d1620d7B0fc7D852Dc12CdA4",
    "userId": "112550482"
  }
}