{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x38717e4661584202a08d279bf73e612f9ad5fa920e797ebf700b8839d7960a8b",
    "signature": "0x4f7e0b6494df4e257a352fe9c925ff8023a6f54605ddf4cc83cdbf7da511e914183e28e10b2614b35a528acee47323f5f205cd0568c20c515bd298556cf57b2b1b",
    "signer": "0x449514246fd526058fC397A17E240721d9Dc0e87",
    "userId": "174584140"
  }
}