{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xb427131c26df360f911f0c4e67b19109d0a92537dc2add6cd4188cbb09c9ae10",
    "signature": "0x6377811cb29026403b1568b80f2e176a7652b03e85076e7a7eb0653f1fa9718818f04db6b6b4c20c672a21cf30fdef68ee47d9dbf2f6c1e6af70ad9b53856f701c",
    "signer": "0x995Ca8f2d3956487967aCfd7EA849313C448c3a8",
    "userId": "227564"
  }
}