{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "602242189",
    "entityType": "User",
    "nonce": "0xb9affc7d983e6b2d277fc6f09a2e9bfe312f14496dc0e191a5012272b09ad7c9",
    "signature": "0x42168c6a74b7ef90ac1efc2e141d21ff44c759508bbb3813b06427ce1d45c0096e03ddf1e969650e0643c896cec41153fd99ffd5f9c04ca20d7c97aeb96fb9961c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}