{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18534721",
    "entityType": "User",
    "nonce": "0x1dd6b4e73e4e2a520f3a1dffda0d974ec17b885bc2c1fd201f48993a71a124ba",
    "signature": "0x9924234e8bc6f42b985ced77252c54f614ae4fbe903c1240dc35b387612e711b50a65f681ce041342fb464b57a01fa494c1a67ecdec94a06588ab47ef25011f81b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}