{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x531e61dbdf9b1caed90f48dd788c56b3f5262f225d9631739bfbdaf061c50482",
    "signature": "0x02100979ed5c3724f93739513784982ce0fcfe77bb2f27660053c1ff45da091555ec27bfcef6832857f98b0b5d96f8d60ee328d2900735e83b3d3282bae729b41c",
    "signer": "0xa75F8c939411037e8B9FB16008b227857Cedf0dA",
    "userId": "462938931"
  }
}