{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0x1bfa79e97b2b2b9d51efa593abf8f8169f3ba1e53887b6e576109b94662c463b",
    "signature": "0x1aeaf765119d47dc931abe73033d699d61d1ce68bd9fa4ce2e3bf3cf338c739d6a995670bb7e73522e59175953b0351fa21427c9bdaea8ebadcbc123caf57f1b1c",
    "signer": "0x18356cfD8fCEF0CfA9c1317D9538cf9f94734021",
    "userId": "855397745"
  }
}