{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc231cb88da99920debfbcaf542dbf9d01ffcf63d65f6e13aa70b412cd03dffe1",
    "signature": "0x1086f99c57a4213a6a81bceb97d3347ef259ea2f630e4bdab9cb92b8fa04e58d2e770e57a1e1dfbd646e3993a59fdf0f6bb135d62ad0ff078470256d1cf7dce21c",
    "signer": "0x91B3395fE9ef3DbED960814b746D5090A733122e",
    "userId": "978171292"
  }
}