{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x73831a90dab8e60a5f44b5c995fa565902b13cb3ca326dc5c353bd6f1a41ee70",
    "signature": "0x5c0b50c6e544d5c9c5267d5e287cffaccdf168c1784363e751fa445d23dbb0bb24e79f584911ff131a73b7e8e7f11be3c5d89ae7bd6e76528ba1aae5c0ac23c31b",
    "signer": "0x995Ca8f2d3956487967aCfd7EA849313C448c3a8",
    "userId": "227564"
  }
}