{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152450",
    "entityType": "User",
    "nonce": "0x27165d8380bd9ab618d00b18b60ea806ca3be50a639fa9fff715b04921a41eaf",
    "signature": "0x974e05dc89cf63aa4bff5447938ca95fdd252887b703c45b329d6fd2fb960df2230f443266c1e768614b183da7b305d592f5d881dce01ad095cd6f32121c89251c",
    "signer": "0x2Df83D15c880275a0138820cE2009Fc85eF32C65",
    "userId": "107618708"
  }
}