{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353372364",
    "entityType": "User",
    "nonce": "0x8e97e83781dcde2fdc997ea4b44c0426deaf94838fba94db2f2380753067a7e9",
    "signature": "0x28ab8c646bb8647b9aa7e494d763078104c6b9a0722b1b92ec6568d12ad7d6d17243d3c0fecc3f959bdd110a157da8a47833e111f2255d8b54e669b7b7015c3a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}