{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd2280ba3ec31204402d2c77654161038a13d347cb78905f9a9b49ed3b9282f1a",
    "signature": "0x1875ef91495855d92e7fa35a2af3c1a01525f41aaa85c3c6b8042ddc3e6d977e51f69e1ecbc6ff983eb062c58e745723f8ef8981edb07086e637db801177b1521c",
    "signer": "0xEc2A8Bb991A41f3e5eE06134fa4B6af544201e0D",
    "userId": "995945935"
  }
}