{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb57f6ffef23dbc5737ecd7de829b363e933a415d509816a1032219fe16b93b47",
    "signature": "0xc3660dbcd9ca187eae4ec91d7bfb27ca87899648eacd5493af21bae6655e39d44575a72219b75538b623b9798e1b0f6cf603b4f4a225c4cf1827e2774a1934761c",
    "signer": "0xDc0418f181AdAeC1a5eC17D5E735413F389a6F6F",
    "userId": "443639918"
  }
}