{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa0c676d202ebc10739a5897e91231aeef81ef66f2c7412610bd618c8d50310c6",
    "signature": "0xd9bba41a542ec63580311dbc6d9e5230ed459c4da77d77a14fd4718713a63fa801e0b7979d39c03af22a097e2b817b3746d774e7d2dcef25b6663457057b9cbc1b",
    "signer": "0x7BF745Ab0aE164aD1b31611967641E3A638e9E55",
    "userId": "520341854"
  }
}