{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe53ce64ff297988f760bbbbd0f3ef879a44a36a8e0799d508bf6cf05dff86d7b",
    "signature": "0x3efa7b0b1c6c9bc3d94cc8a42669f41f093de1d1d2a04273313e9801eb80f3e544dae3d32b03b39d9cfeeef54351c075524fbb6895fcdd0be68a94945e7714b61b",
    "signer": "0x4B140b61EB41438Cda0Dd10473ad1334309C1b97",
    "userId": "45511108"
  }
}