{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18115",
    "entityType": "User",
    "nonce": "0x590f8d853f5fc3fd2d65ebdb4b4d791fd5ff37d4e2858e585bc9e04b77d52abd",
    "signature": "0x624e0af43f50a0d46a58acb7a6281953a4e2fb4b06d1ab59bf361285ecde90f5191f7f3d5aca8b8fe47f438783f93057708e419e5a516ee811a5d56c2316e4761c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}