{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0x62252c8cc37649f5c692bf40853976867b147ad4e6c721f3d9299d0142d7072a",
    "signature": "0x9f0a72c0bd6e8d861dea558f920c0ac3fae62e138afbc83721b8276a49e72dac57e0105de840363cc3c1df1afdec2ed90f2f47553b0bc6c1c153115b132135f91b",
    "signer": "0x4B140b61EB41438Cda0Dd10473ad1334309C1b97",
    "userId": "45511108"
  }
}