{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf3f8addf83f7cd62f7bdaa3852cae315c9033601803e6108d9984d16330d07cd",
    "signature": "0x2f06f4d84a8ee6368aa83a38283d98e4f39a9fff6669e5750788f827ddbae96f32e21f97d96e970c291373dd914f989252a1924ce8a09328581a895590905a921c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}