{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "906184213",
    "entityType": "User",
    "nonce": "0x40b815b0dcd72c1338e396d569e22fa6e0263e264e1d20ab43dfe37d33ccb497",
    "signature": "0x3d809e43f02776a3e9c7a33bc8cc067f0f4e5b3c1c553452447cb435c3e267c053f3a5b3024c3f4e084c9b4d6c6ff97a393132c40664925cb17fa69f287e83171c",
    "signer": "0x9837C03EAdfA74365Cdf4e01e6840D356104bFab",
    "userId": "911622928"
  }
}