{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377017",
    "entityType": "User",
    "nonce": "0xe99909ad74d69de55ca9e8b37b05f4ee24b936fe872a1f54a9398b868d5af6a3",
    "signature": "0xfca27b3060166c98caaf04f3e962bef002e9939f1a366843082a79cca9c4495466878c1767991f10743e4613b7b38685f21f560f39da09c095d3e1da431d19611b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}