{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2681",
    "entityType": "User",
    "nonce": "0x109b5f4dd2643548f882e58b6a8254fe8fa21703201173a82604c893f375ec74",
    "signature": "0xf5e1c465dd5c50da983d2cdfd5f49b506881983dc778ddf689df8a3bfa36587a67ae748e32b4d40288bceb25094b630eef164a5684639332f5229282551b58291c",
    "signer": "0xdCAf5149A8084F2C1c72dE882740656EfA9715b4",
    "userId": "994758391"
  }
}