{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "396700",
    "entityType": "User",
    "nonce": "0x9ff1d130a0a32cf53b973255aa5c7358a34d1b51189c3347ac8aa8e6aeb7710a",
    "signature": "0x4f9ae1e67841907d100573af114cf3bec4d24c445e7b991b08cfbc3af69a8690652c1b5c0cd667b40862c9ec392f51cad5178d92d6df3f129e7b57d213f2c9591c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}