{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190942",
    "entityType": "User",
    "nonce": "0x76090b9f2f5971e28bc8a4f3a16a17e0068e6ee6fa2b6b71085639e6e6f06967",
    "signature": "0x4f9dc589d9d20bfa0b64d72cb274d1eca46045b7b7a7749bb29e5eeae76bf4455eee2d3e45b9a6e4fe7455b06e843c1ef64b09082dfc5657765c0edccf5afa691b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}