{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfb1e67c9d6c1f475f2dc18f9a39477cc857e859534263d241918116788affa5f",
    "signature": "0x90fbc57f5f9b0737b526f3fe0ac27fd46f1cfde20f6cf5dd03da461642bd4f381106f91110edb4a0370c1d31c77652283991eca9063f2ee1b8eb8ca759c0c6b71c",
    "signer": "0xC44BC4EdEd8fF07EA4F8432439Fc7A10111e5e82",
    "userId": "139585735"
  }
}