{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "903958768",
    "entityType": "User",
    "nonce": "0xea0db03e0be92f2dbcb27074ec5d0cecb51abdc3961bd1bc89704973ea897fde",
    "signature": "0xb643e2525c5d9154d8944c5ae2f6b63f80732ed9a50367788ac2bdbbd6eda0e53b2de1c3f497c185968304399e82cf5649471dbc43a2a0b1e5e641a05ffd95e81b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}