{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc0c64e80903e96ccd1a9686ba53c15e7158708708cacb8221a87e7f1bc08e71b",
    "signature": "0x1ac0cc34a70a818adbb21e699df0e8d2fcd93af1a7610642af62ee2b6c386ea52292170d5fdf8f67244359261b0881a272ec2c02fd8c815a3fe990908e8f7ba11b",
    "signer": "0x64b994B716782D5E615cBc0621118921dACE52E9",
    "userId": "433692728"
  }
}