{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6b2e7bb8ed121c895a5d139ae950025255f5750fb6e7048d8f1c5c340bfa55ba",
    "signature": "0xc9042837d12df503130631a9d3604ce4ebba97a27bf1b599883035464d5a23b50daac225d2c47a5a96c79d43d08f7639541578d0a706fad848567d4c564de5921b",
    "signer": "0xD2183bB925e929C6e41d2962b0eAE53ce5416d80",
    "userId": "512702426"
  }
}