{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "387832",
    "entityType": "User",
    "nonce": "0x4b3e859bd8ec8fdcc6603a8a113f4532b66f52aeb2b8bd89e08e03d4a7ba2b82",
    "signature": "0x71dd0d3e0064f673b304c94eb642c799300b3807542fe22e9abd644dc14e466a45db6b4d84da1814ae550bedc1bc336caf6cf3f38378cc6771c13609b774c2241b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}