{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "713649918",
    "entityType": "User",
    "nonce": "0x6bf95ebee736f6e8b58d2d6162b506e725d9fb23b4e9a13d68027f33db231d77",
    "signature": "0x4feebddc1d975ff5ff228e7732f6a2525d8d0ee8c7cd57e6fc0d37248bc8b2dc1200441a4b8ab5947abf2c21014e897f22f285c34d4fdec428c31fd868a755da1c",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}