{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645720561",
    "entityType": "User",
    "nonce": "0x0e0d5a627e4b1ac3dd3cf267c4dbc361bc7b537c953b4570ff3e9180c0f29b69",
    "signature": "0xe094e259e48265dbd21f910191037e71cba6d056177dedf12294423ce6f793aa3c043e3afb58a6f1cfa9725c9232effe0a8d3e3eaf9f818a39e2c07e9465d1931b",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}