{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0ebfc793ee5927cf6090f224356a3daed52c90aba6b842be436395dd07da8b6f",
    "signature": "0xc4c2eee897e6fbbce565f5135c2493281d192ac2a34caac226b37cd2fc517a581f6a52755ad2cd2f85c9bb4ee1eeec2a006f176d643f6a026b269bf0e5a332811c",
    "signer": "0x8eEbaC0c8b926729F8Dc288872A07cc9d08d8d8c",
    "userId": "42402405"
  }
}