{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "223946715",
    "entityType": "User",
    "nonce": "0x41fa858900dae9dad9748a77d83654685d3b378dfcf2a8aaff6fbb9cb486acdf",
    "signature": "0xe0acef66f3343a362634948c3ff41ba2db92cf9055d8f3e475265ea1d51adc6330f20fb44019034123e3d839e4daffa036d304192a47891808770387cde7f0391c",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}