{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "417991597",
    "entityType": "User",
    "nonce": "0xca4a8d4957c9beb71087382cfa0e57e6952edc5f15080689eb6c91b14b267143",
    "signature": "0xe6109b98bb63e0534b6b01085dfa4ea96014bfa0b781c019ea692784eaacb2771ac736901b452069ee631c23cf34911bdb08461bb08c6d3a503d835eb1b107551c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}