{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0xb1c5252be64600855d937e3b6a7dce9725502f153a44f1f4be36733e8d09bcc5",
    "signature": "0x4e4c0c839f3bb315d628ea6e6dad65d73d8876b574fc8b72bf873b6216e775c94c64babde6eabe7c5e0ef6950e6388c03c446d191f5fc5f46ae2c7c3aeb4a5fd1c",
    "signer": "0x821Fd8705CF3578Aa1b5F661C05Ef3bae2B94b7B",
    "userId": "593474355"
  }
}