{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520958130",
    "entityType": "User",
    "nonce": "0xdbc72ea4cc1987ac810d3b13116d04f694a6e8fecc43b4f14232abba08b246ca",
    "signature": "0x09efd1060558b5ca4799ed98d2c6eb58eab27e8c047abfcb878e6e77361a8f22418d9bf6bc50718f6950567790c83acc58407f980c60dc761dc6bd2a7671f1ff1c",
    "signer": "0x9de29362DF595E6949CaA2820c5c28c3D6b0CEe1",
    "userId": "857551474"
  }
}