{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "614212580",
    "entityType": "User",
    "nonce": "0x428d6f6ef2779c43770ad37528a58a41842a3c09251982aad6adafa5036fada8",
    "signature": "0x8d56f5adbdd99b8344ac725837d54b9c9ac08fa7c508577cbe580a4de06dd75360675343fc723005627570a14662830ab2dac81c7d3de256e273d6b368e629411b",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}