{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xffd6cf5689244bb0f003ba0a6c323a14703a00e0a2ff9e307daa95d46b38b919",
    "signature": "0xc191160b3b49ad00d40caeca4afb8301c0efcb5528db96d27830f80e797034932d3d63cfcbb948013b201031c20989adb84fef046c865ca28b7de6dff23465c41b",
    "signer": "0x8d3118A5f58aCd9b42B32a8Fc593706151d99AF5",
    "userId": "375795342"
  }
}