{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "175877",
    "entityType": "User",
    "nonce": "0x21dec75595c675d844fd7a5543e81c729dd78748217bd3e7112378c7319c10b0",
    "signature": "0xc4df1fcc355d27acf938425c67ff12feaa9610c7fb17ce1211f965f80c480c56199898f2b7496868e1a6b6dcb4e98b81c9ff0ed224a7532c8ffc31c08d0f19201c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}