{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x30a67ddc27c4fdd71775dfbf6a8764a368090940d4c7a0561f772eb98faae18d",
    "signature": "0x6d41a7b2ea26d265b8c2bb457b3945eda20092eb2f39c0f8dce8cac4dc151be17b699e14a0e953bdf26be0858d162bfa64a7579357424205725832b54a4c0f921c",
    "signer": "0x2198a0E369C40cA5ECDa0be3166055FCCb14Bb50",
    "userId": "576049552"
  }
}