{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707937",
    "entityType": "User",
    "nonce": "0xe2d72000c36e83a6bd2c8e41321fabf61e44cf7e82b5d3e718c77efe32901a0e",
    "signature": "0xe7e1444fdc2887f0ea3942338aec7e2f77429de16e4cc081d74946e91e1a8f1d37fe5fb98e988fe135d3378592ea3022b6b1e8415703b73591f21ae8bf7631511c",
    "signer": "0x375963f281CEdF4D9D180496F80A256D574daBa2",
    "userId": "981824750"
  }
}