{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4464",
    "entityType": "User",
    "nonce": "0xa07034a24681ec6b5273f501d387071a9782d76caabad4e6a550ba14bf2d8663",
    "signature": "0x23a4884bee73074a63d26472fbb38765fc99cbcd5f9e158110fb0be6a143603a47a6830bfb54a34dc2544d271a51e42d86a195654d9dcc4842b6cac027df7d801b",
    "signer": "0x4cFd9635b74edd6514FBb781B9C920be24A36AfA",
    "userId": "376830101"
  }
}