{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4305",
    "entityType": "User",
    "nonce": "0x913e94a3723966d244a1fc439d4b82025ad5697d4dbc3ac4e3f2898f9729d053",
    "signature": "0x6d09e9f5b1901e28137edb69bd51ce2d9f074cda7036d8031fcdce35fc525203161ec8a3aab1afd1b646923462e657978a76d18ec4c788c9920b93b0aacd141f1c",
    "signer": "0x334c1E156039f843FC1FC4B64FBc58136cE8414a",
    "userId": "973129552"
  }
}