{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313210619",
    "entityType": "User",
    "nonce": "0xc1da8fa601e4bd7301fc7f8a9e88a0ec46bce2af4d074cd5daf051006d626dd3",
    "signature": "0x688ff241c27383a5e085d40ee494ed04d8ae29d3042efbdc02b2d7f37cb0da081b8408ae8b9740d5917569921538f41bedf87391fb714b957d0f21ab20cbd14c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}