{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x8071d5f45bd38cbd71bff409cea8eef19b563ea989225ae41db4597a5c38f10d",
    "signature": "0xee43670dcfa4bfd0ec26811d50642106a2fa33ac4a483d73a1a9fe6bdec2020e319b8d97555ef4ce8a039450c5edb016d61f7cb32fcdb8f842fe9ae8d9a93a541c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}