{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "493345562",
    "entityType": "User",
    "nonce": "0x2cf1501fa94370baf2d6f4778138d2c955728eb8ecfb35c56e7a049d11be77f1",
    "signature": "0x1ffe0cd88afe3385e0d62b97aacb5c3f0e5bc9168cda8d7a26644b3cb0892f103ddf193ee7b8bfcea5f74db0492328ff3b6725a245e31b0b3a1ec624645d00621b",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}