{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8409",
    "entityType": "User",
    "nonce": "0xedb20bfbad5a5afed44e7c749526801c99cd22002a4a4b5d6f18b9f4b386a82f",
    "signature": "0x98edad6e8f28869e279612bf21b529d57aac3246e948d1e02577aa543b2df7af5e9b04a598cc1d6da4302b2338f3cfa5cc192e1a48541da74f3281dcedfd65371c",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}