{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "800321962",
    "entityType": "User",
    "nonce": "0x193cbd5e4dab248ca0828d658ba475ccc45e5c6b312bd609a0ddef2b9e557551",
    "signature": "0x1c5e131fd653cf73d16035d8855f27a3e38f6acc4e6292737166c61fa055339771744325eeba845dbc7a7791d59842f87e51b8c4b9a89accf421e0bc629900a41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}