{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xd3c99bf4bb2dfae2fd6316fb5da7fccc6d92ab9f359b83e999fed5ba826923c5",
    "signature": "0x6e887e97c867be486d071870ae8d41dd01203c562f31b6296e156e4985b5b9bf45da6864e87537febb6fd0fe4aa5e8c6ee515fa9262ec48307dbae90e53861c01b",
    "signer": "0x406fd2b6f6C6cC5622Ac1c5799cE4911D81e02a7",
    "userId": "461949730"
  }
}