{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64839",
    "entityType": "User",
    "nonce": "0x7e69817a0fa2555d78c0e2d7e6cf99fb094bea2bca4a05ff81d94974949f2874",
    "signature": "0x0c06a6dd9c2f50d6bf9954979c4f36e53e2947a97b7f3794c309e09eff94eacb3a1b192df4898474a06a6e78ed7c1ba52b759fdbf3476f866073f1837774dcbc1c",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}