{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257420589",
    "entityType": "User",
    "nonce": "0xbc9ced9f7d0421464e2f9b7cbfd036fd5a442c184be351c38bc2cdeede69c43c",
    "signature": "0x15bb3bb3a7dd74204dfe8a23f47cf457954689352388c8a947bca5af925c4a381cdcea586527724879a1594c7b56ce86bdbee86d75b1276c5daad82a9c2efaaf1c",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}