{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6b934e78a4c4a27cc3d69c7f8f25552be0ca538b5fba3123f98b0008600afac9",
    "signature": "0x04920f86d9da9f7845832f9d764871b95900848e28b67bf1177a539576ed156e0c0d3529cff0d695a5fe32dcb0f89fb0fe34bcfb5fc38e7b63536ab15b465bee1b",
    "signer": "0x4Fc1bdb3E02Fc0abaaE135c7389328b81538E857",
    "userId": "369736730"
  }
}