{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333420",
    "entityType": "User",
    "nonce": "0xf65da0feb07c61c04872d710e3e37f1f0d3037da83a2a80ffc6b200a6fc4a977",
    "signature": "0xfbb94a96e7877199e36dacdd79ec65959580f9b90d1b90750eacd47b07d6c1e971756576c17174c2c6b3b5039a5a794a62f484a8ebba3e33d6e985b31b1f25381b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}