{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x613dbb0becfc58fce1c2b3309af785893261f8842eeb820db65db784eb830a5f",
    "signature": "0x8aea3914b96fbe713a3ad96dd2c89c1c6a10114089cf48611f5cdefff8d14ac7048372461c0e5bb6ac03ef9ea7cb5fd288806915a564f01946e1edec781ecb751b",
    "signer": "0x991a9689fc2302f5aA49d584CB5eaF3C97258676",
    "userId": "348291580"
  }
}