{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x377ab4bbaebe8ec0c588a3feb66964a2b54415223d33a7ea2af8fcaa19e8584d",
    "signature": "0x560caf2739d6a0f60d70c0ec06bbf105bd248231a2161a60f8fcce255250678e050a18c26bf571bc68565730b02afb6655306e1cd701d0b79228a7d21d65669b1b",
    "signer": "0xA5984A059A1733149DA81bEc73492e94f57e1F9C",
    "userId": "520129762"
  }
}