{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0x70152bb2a799337b1b57ea8c6ca7b0bdc6715657c9cbaf14dc60393290adf2ea",
    "signature": "0xb3135c2f95852f9c4622be8ffe0aca33bd55e65038cf81959722cbd8a2c285b91f51d96e49b0578afccec4bcff6a905527d53485d4704371289b1771e8afb0ba1b",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}