{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd368eec8a533caaa356948c9964f915b5e1d90db153d10603fe456887ad7ce22",
    "signature": "0x908d87612b9d0efdcb28374221012744fc53ffd4227c85cc74f6b7e08d80f7b7167fcfc2acae198298467e562b17be14fcac31801ff07543ce2f55ddac348b9a1c",
    "signer": "0x5Af531A9cDF9747df40f57531227d70F1bdD2ed7",
    "userId": "511108744"
  }
}