{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120328011",
    "entityType": "User",
    "nonce": "0x340c9fa924f50edcf9e5cbb980a9527c4af78a8ac850b3e3f4d661a186ef67cc",
    "signature": "0x8a733b73eaa1e4a1b8dd53f1de35c0f4124ce3418429c5ebdc3a66fa46b6bed42b6d27d1807e93c924aebc48613690220fba157e34452875ee6ad378dcbf6e6e1c",
    "signer": "0xc4A500E17D812B285447720CCcb7F8eB148c91bd",
    "userId": "256479919"
  }
}