{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "871265248",
    "entityType": "User",
    "nonce": "0x01b75a262ebd9f86cd56c507a6eaffa3f2dfb96741340694440790b9c7295c9f",
    "signature": "0x9d6b07e4093274280061e0ee137b036272776ac79e7f93476c43804256e6c8dc5f375f4f218c82fd35405cbead8c5fc90d7eeb790a69691c5a5c9de0bac710641b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}