{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x08a3913fa71d3affae20b2b6b7d59abb267509018b5a12f13853949e8d3e4407",
    "signature": "0x21179c2babb402c3733ac17f56d7651df579ba1b6eff853d6108193eaeb3742648e894bb24c822902a066122db080aec69b3001a1496836fa55b035d07436f751c",
    "signer": "0x665E1c9fF53dd815F3d2A622b5BE329e9633B256",
    "userId": "52363660"
  }
}