{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xad681ff0022d236dd99190c2595375e2871c64fcd09de1b6dd28f327e22331b6",
    "signature": "0x9b28ba44adb64e188dd9757da0dc6dc1702eee9e1bbbdcc03f65c3bf39a69f300388a65fd53ebe601f271cb7254855c0f7ac92fff03f6d48643979694f4d3aea1c",
    "signer": "0xD1DBA334fd16083Ad4b48161Ac5978e18463Eb8F",
    "userId": "522747799"
  }
}