{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54241",
    "entityType": "User",
    "nonce": "0x89e71668d833483d7f39563577728ed5d7de779e65328ee2696a8b733ab4cc76",
    "signature": "0xdd836e86d4211ef7256b543eaff1d5353524cca71b4f37dc1882bcd22bdb9e5b1ee5b555d03d1fc154266b376bb20ed18397ec1bf0e35e81cb02c238abd59f881c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}