{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1644810",
    "entityType": "User",
    "nonce": "0xa8c802aa8e0c0b8a0eedc08440154a477dbf2d0b3d578fb269179a0b8fdff913",
    "signature": "0x683dd09b479bee353f10435c1feb36b989d7c5db9be184b5c144d4e230fb7103332a6050bee60121a72cac9ef454c559454b35c173ddc13fd12a75ea9585392d1b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}