{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3479aa465b9183b2413353eb527d28bf8b7ac2558187ac699e745d1a01e4a739",
    "signature": "0x67205a01b6bb655574d64f4a88a11d7a347ecf3e9e0842888bfedcf08328c2e61d4aebfdfc2eefa57a71f999fd448d37ac03862f81f9a0a00a7990ac2f89b46c1c",
    "signer": "0xcc841B6eA2539A05124134f4aDa4B368Dd77C47f",
    "userId": "122897356"
  }
}