{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "597419205",
    "entityType": "User",
    "nonce": "0x600fd9f82138ccead00fccdc02fe6646772161bf909b09f5ad850fd469306700",
    "signature": "0xff7768d9fbb07a31765175a7a3797e41d1804d7f766372c9b7c33c003f0b85f8326f460a5aca246fe151334173b4a384f3ab255d18795cfd504644e4dc9c165a1c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}