{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0de0db36e0977505e848423a06e93ab17945281dcb9a86869b3d6e9f64c1245a",
    "signature": "0xe31e51a9ab823c04f68588c8e659c83c57aeb027de6ea0c7f1598b7ed38f7061405fb309ab347b8d942ef2507c9ac214311fbe4d72dcc17e15c41cbdf3f8a43d1b",
    "signer": "0xd12A323399559A3773F865c8F21031bc39c29135",
    "userId": "219968466"
  }
}