{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843421708",
    "entityType": "User",
    "nonce": "0x276812999f28a4291e5324a2260127586f9c629c2010cf25c832365ec885c885",
    "signature": "0x734b59786796711be42d1c06b751aa9109dede9b8b89ce666322738892695d5e6162401049770f29180a30fbe31aa6096cb8f43536ea5c8d03bf3c1d41f5ffb21c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}