{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x150a0c8075fbd61da835e7b5ab25d10ae1f5e4899a4f9a6a7850ab2d407d11ac",
    "signature": "0x4c9a15dd27903fc81669648e9e74654a3f80070121d80df357b09917e60886c2718b09d30142eb598b9286983e0a8acdd118352e711bd2fd41ce0d8f3eee52b71c",
    "signer": "0x3b454c37F04119cfca2897Ec632809779ee5Fb35",
    "userId": "610042501"
  }
}