{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342670",
    "entityType": "User",
    "nonce": "0xcffa218ff9f87c47a814f572e78b41ed031fdb5d2c949fcae57c1f8d3189d773",
    "signature": "0xecbd78ac24cfd3eb2030eb35bf5f79e266fdab855c1c5c93892760f612931fc50334da8aaed5c952218b48c3567ff592519495ad60e191acc58eb2007bd0fa501b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}