{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1528591",
    "entityType": "User",
    "nonce": "0x103e0e8f76dc3588e3a5c02a1068c14ebf5de2996ff4ad40bdd2fdf482b75eca",
    "signature": "0x36ad551122e382c8c4ec8aa7d4441c30ebf3b94e307c75dfa0bfbf3d896a989355db1fb3004100ddd125a85f82cdc27d95b1923c1edefd4c5c1c547bfea2a5fa1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}