{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "344831",
    "entityType": "User",
    "nonce": "0xd341d5f5ae29f3a2a0410bf1f67efbc3565f820694908c2ca330d03606e07538",
    "signature": "0xe6c3198cfd990713cc8b8038114bf8c35bc19f424c31fa061b720cf38199968a7cb548b359de3756bf9df238ae7f03f443129718da8ab558ae1137d1e2b660051b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}