{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489026160",
    "entityType": "User",
    "nonce": "0x4fccde9ad340cdad87577fada15cb9cbf425bdee881735bf29ae358884965e94",
    "signature": "0x985654244b2daf97eb9276c827600efb1396a9c54f4656b32a77ce483aecc3b9704c344466340bacfc3cadecb81ffc9ae521deadbd84da86a948d803981fe7621b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}