{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xb491b12d262a6f31bd0942e3055bdd2c4ca4e55f8d1ec54e0ea61892801e0e98",
    "signature": "0xb46391ce629759659000ba58b3b52dde08a0e10657c072c73ca53b9adcb97cf57ed94bb4ab3d74a57d0c802cd4c002cd097ad6bbb93d899ba0dbafb833ce3f391c",
    "signer": "0x89d83Bb2BF0C1Ad6B0dB1DE16DA35a110Ae37a6C",
    "userId": "871535685"
  }
}