{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x939155f132bdeda7028e31468aa953eff8a766dc79b238a6a397465276e48763",
    "signature": "0x02c9a05d0047725bd6acf92e54f69910a44a490f214a170e5a85e53df89f3f9e6c2d3ffbc78d857e1e5192b26646c17357f528d96b8993c1f01e8b58136196021c",
    "signer": "0xe91F51b289210829c3933C4E566a9F9B32495206",
    "userId": "42276403"
  }
}