{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x60fe3ba73b722f3f863cc02ac90422f5462714b124363e09f5a04d6e6959568e",
    "signature": "0xc3142b12ef95ad3ae69d72eafc6ff48fe9a0f9436f2403d514ba0ddaa193c45059539809cb922b429575916d56f6963f406a77d8ca35142395552b672a6dcc001b",
    "signer": "0x3f937B03F6af3C7F77F664DE7eA2C61332A1579c",
    "userId": "775603299"
  }
}