{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf930533ba1d1dada5ee9b433143ada536f1508f44d20360331b0175cbee1a3e4",
    "signature": "0xc203784d6b7382db8415467d17f7ede6944576b06e235b6a2c16c04f2005a01a67ebd25aa4dc7ccaba3673a6f25521e7e1dd2fe0798bcb83122bea17b8fe6fdc1c",
    "signer": "0xC14ba10C48cfcceAc073202bA2A505D9e6CB5033",
    "userId": "311948584"
  }
}