{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "739274444",
    "entityType": "User",
    "nonce": "0xc1d696939e8af7e69f85f392e74d7ef5ff04fd8ee985c58a7c7d7c7ba5b1c404",
    "signature": "0x19e85805af3a579434798bb07d3d187ad0c93dbb504bb66ba841223d9d63151b73cfd5c831924a26fd3768bc39522f79d5b7f2b37df583802c54c144bde5ce5c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}