{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb04a867c7ec21024521aaf398ff2b022504895dc2f6e635759903e7f2c28f36e",
    "signature": "0x1b2b38c017ee9c0db7f4488942a930596c782e21b4524974af61daae5ef0f7507e33d7237505b7362f092df4e0daf98829bd88c16e69a787c21efebc0af09c431c",
    "signer": "0x0fdbE0966d6f65E3DE225D16D06131c10d4F2b3e",
    "userId": "560630042"
  }
}