{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1625152bf4075e01411e51140e71252528ffd40aa9c93f0bfe828f6827713485",
    "signature": "0x2ba137ba6bcf34b7d6fc578741e85cc6378898289e3478a71922a40d4931776b545ce92d647940576d97cb62d9587048de0b94074c5ad86af273bd59e563b8f41c",
    "signer": "0x45431d52A374aA9d0891f2Bcb6961aE10227f64B",
    "userId": "318391232"
  }
}