{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x2d48745d8f5d0c08d95e361a8187b2c30a975c6157257505047902a96ed73317",
    "signature": "0x366bc4a2121145ac9d276d426484cca9b4c554465901f43b594d813043e294e744bf5cdf39818d298683e2e3530dcf543cceb43eed105cc4560db8dce4a5f1c51b",
    "signer": "0xdCEd2038393702F47EfF3e1fAc5D5Ffb9abfE03b",
    "userId": "883672014"
  }
}