{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2187",
    "entityType": "User",
    "nonce": "0xfee9a3cccb8f700e5bf877f7b32b1d7b71bae14502a0aa9e4d592b28fa332686",
    "signature": "0xaca886672e3f1efd8e337c7156e98c7a9cfa9307fb8aae7ddb218e2f803527e0314bdb388d7e1bce14078a8442764653faa546fe521ca1153263225f82caffee1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}