{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18957",
    "entityType": "User",
    "nonce": "0xfaac8fa806fc4ea70aac46a643cc8369e1b0b3cae5e7ae61be86dedf1924d769",
    "signature": "0x6714a700696b4d0c9e69a7613f900e68457ea2b859fea19c056a733961bcf84e57807630ae2aeb92a9ad1357eb907b496673ff38243efbb2f1139f79f1dfa3371c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}