{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16570374",
    "entityType": "User",
    "nonce": "0xe2da6f75d23119a384a30b55c37aa64ce9bc64d6064256de6df46d3f1e54b192",
    "signature": "0x47d65688a696483023c2f8ef183be9fd8e8d8f9b9fdd31308e94470f8e1031506792331b3e08fc0e4607781c88f634a84a25279db037fc724a6bbad7c010744c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}