{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x725fe434b3a30d054b3b5eaad9e626ce03df9a163cca8b9a1ec5a982222ba887",
    "signature": "0x9e3b722f1e6dd2e9da453b37b28f5faad3f9bf77d4d45dc68be5457fc42ef62f50ec799c7a91b1b3891161bcf097836ad19235d19ad67bbc656e999332dda9b41b",
    "signer": "0x4bEB7D64408E377BC0cE5706956846D437acF8BA",
    "userId": "147968817"
  }
}