{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "9780",
    "entityType": "User",
    "nonce": "0x0439afe8a3fea31710a6bd950f006bbb15293908b98fe6ed3fa1ffc4b903fb61",
    "signature": "0x4dfbbd66ccc0cc76b277d6f1ede7fad6e6f91a3262a5c7a9ce3700432cbc3b351ecbcfe032976c3a85218f9433db4db9446f02e9b3e1b3830a6ca04b255465d91c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}