{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x10b145220aef7a0f839324a8e0541cd3625dca7126be08433c9f49060e31ce4e",
    "signature": "0x8606eef8699eeb7a99faf465f9ba03f4c3c31ac59dd0d1b4513f450e4d375f9d60c2e64bc5f2c21fad886e0f985b98026cf37560da0156e9f98faec7a358e9691c",
    "signer": "0x377c116E98D266734C0D4207d80944bF179a0597",
    "userId": "830148903"
  }
}