{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100910",
    "entityType": "User",
    "nonce": "0x4c475481dfd92fdefe201d5840f51aa7fb8cff1ab54d636f81c641b408e086e2",
    "signature": "0x64a0d02e4fd1b171d0310190e96adfa376db5cdf37c8245844ae0cb43f2d731e3a5c6baee360165ac0b6f6c6b94e625d2160b159876d0fdc0175bdcef64830ec1b",
    "signer": "0x16BE3cc7Ee03C75AD10a94fb7234B045D351825c",
    "userId": "66529124"
  }
}