{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "222",
    "entityType": "User",
    "nonce": "0x4c28119f3e3ae0e6b16ad1fc8e15932b95cc8a7125a2cc3757f228925e4af77a",
    "signature": "0x90a78a8876bd82abc9b2caea5d1fe20070ae389ee1ce5cd55f728f29a84364ec1cfbba92a172592c95fe838e4860faa5f641810fc942128dd4d198104dbf66c91b",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}