{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x335d3a07d12681556a505eb45c55190dd7d85f0ba30e51b1978c35c9789b6361",
    "signature": "0xd5ab707a339973531c4c1e50915dcf8760b591d76d91d7b29b35542a9accc4b31ba548a199e6f32d2addc1dfbd1be394f2cfd530dd17f2e545c41b7870676f511b",
    "signer": "0x155d63D8364e0ce505378329e1d95d15A5B09f72",
    "userId": "255565896"
  }
}