{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943474958",
    "entityType": "User",
    "nonce": "0x545bdd8ad0898f15ee7bfb0bf1d842c2793fc9db56a94eec43a05dada29fd865",
    "signature": "0xe1e4bc823d8d7cdd531d86cc6370ed6d8099d98eb4e0d48ce4e5ea2074eb6d3e5ad612ec96e150e3a24b6ba0c517ae5a562773b5200c358cfd44cad3d0ca97741b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}