{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x71c74d5099fd7ca40d576f484099d3252873be70fb7563010fa66c7ed6648631",
    "signature": "0x57786b9185352178f444f3cc926bfbbde6af20744e5ddbd8bfe0f6ac811f0f23622602261b62d4a621d4aa93f9f486595fdd61901cec2da374835df120c562b91c",
    "signer": "0x4aa6169c6a5172Bd0d0793dDF50B8C553cb1DB37",
    "userId": "294598494"
  }
}