{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103987",
    "entityType": "User",
    "nonce": "0xbbb10c14bbc58cb6da065567018f2d92eca41f808dfdb299a137dc219b99c11f",
    "signature": "0x6a71bb1632b46e386e3dfc319e180dae6a40a0385e117453f3e59d6ac06c44407334c789f390ec27042b72397519af1524d5d6996d3172de70f911cd20e4b35c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}