{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x997ea819b489eabf0d601c6efbf758709033ee4f0114ea5d3d6ee23018229a78",
    "signature": "0xdc9ad4e105bc1a164ea5bdac67927dc99405f34235baa328f122e49d3247a03d5435ffb23fbafe2be68f8b5795bc77d72423dce3d5aa8d5ddac78a9d553a0c1f1b",
    "signer": "0x37425f7890b0ECDAe041Ebb035741bf1694Fcde6",
    "userId": "626061369"
  }
}