{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbbc6c66ca706349054c97022f45b70dceba25fc1290af33d2241ec314d798e0c",
    "signature": "0x9f4ed9ed28a1c166d64744d035e9ede41155523364e9e5c0bdda69659fc57058611bb8de52cf96880e5307ce33f864441b56ad0599d3d55bf292e94c7acfc5671c",
    "signer": "0xE5A5B764397cF23bFc9dC77c74F70674BBC4220d",
    "userId": "942357794"
  }
}