{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc74f40401308f686f37f3864ec800f8ed506c894a9f58db8dc54d12318fadf77",
    "signature": "0xc41ab2fb1e08232e1123f3bb079a3660521350d28a59dcf033773f9a3df154975982bbf8b485a1aae8832ac4b0b02d653a65a5b7ef8426fc34caa365eadf09ca1c",
    "signer": "0x77417B2F3c0aE9311e22d9d0b21326C945f9431a",
    "userId": "69721554"
  }
}