{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x5607dfa6f2f5bf47afcbbbf32999e2e0cbb494412d358e08e8921f53da164814",
    "signature": "0x35f5023620f3aa36a4d85a19655ccdcafa79b1815d0417b1d283fcb03bc8be873202e87d3bf2966f8650b057a6606b5f2bfa63f8b2d3f48319f15f1c4bddca3a1c",
    "signer": "0x995Ca8f2d3956487967aCfd7EA849313C448c3a8",
    "userId": "227564"
  }
}