{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "709633854",
    "entityType": "User",
    "nonce": "0x439b1cf8d719fd30bd7be511d1559ab18b116e299489ffb6022b3fdca5b37626",
    "signature": "0x80e18b315ced317194589dcb4c285b880d2aabe5e84cef5218b5b00c74ad3387241e1b33626a084d5f28431f0284b096574fb6f2388e2d5da888bc01afa0f1c11b",
    "signer": "0x405A18E09D8C4100F2412f37001497351EcE9C2c",
    "userId": "21357518"
  }
}