{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x03340aa5d955f5e862393b5c14e95f5e52ffcfac179fbfbac790d211013d8a3c",
    "signature": "0xf822db13f171e94a33e0272980b4b3c11533ec7f031e42e2cd95cfe2ef88d39d320ace9bd0a510d0aa1e694f830060ddbe65b1ad749e650d91c70fa97d9def0a1b",
    "signer": "0x96db578AF06236e2C34b692Fd0eE3eB3D3BcEF18",
    "userId": "40862571"
  }
}