{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "568518925",
    "entityType": "User",
    "nonce": "0x5a4e94af463674d5ec71c9435f423f1ba85533e46777f3892c4128178becd9ff",
    "signature": "0x19f5e01761888e9f08243c8a0fc70814f2106891aa4c40decdb7f7241f75564026d421505c3f8a155db90651e47737a4f32527f7f54afa686176c5efc91908b91b",
    "signer": "0x3d3C9a78785e201CD119b8f74d7d88D131bB3cb9",
    "userId": "350266629"
  }
}