{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xad5122b3d7ca8f6be5cc75709566c0ea8c94cca4497a1233882abb69285e82da",
    "signature": "0x10ad0262f8e9bbb7a9d2caea6e29906dfb9dfa24d1185fcd61acae1ac8678f9d4bb6843fd77a04f74368e2faa0edbf1561b3975e11a84725de38a6500425f4c31c",
    "signer": "0x3Cf3C89FE8F0fa5C671377B145Cd7d5e83fa0257",
    "userId": "159488853"
  }
}