{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3c57f6054c98c275c1badc0a9aa4ae9047f2c95ac81b4b7fdbba2f3c7d6c0b5",
    "signature": "0xd8d3af57d07a3f9b964c1d3a5ae1d11e17c2f30a7eeef64a24346050aa731f576536fab35522eeefe3b9e88721997b3bc3771b84d6fdc50ef90d7b19b04508521c",
    "signer": "0x0A2F5D4CD50BFc8fcee7d40dFDCfBf866422FfaC",
    "userId": "675013541"
  }
}