{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdc697c53a928fab5baf3f3b9aab831b5b2c9f99e6e613ec680a9f418f7b503a5",
    "signature": "0x9e485af80c468b10e249ad41275f20ee46f65ea568657aa1d50852916c35f93713dbc5158a69907f48cc12c7a672cb4152f530a1bf116bb4489746ab6d9586eb1b",
    "signer": "0x552462F88317e9e6E53695Dc39DF4901dB608f78",
    "userId": "511866195"
  }
}