{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "218470",
    "entityType": "User",
    "nonce": "0x5f1b4cc0bf48de97a7ae752b3cb52bb38dd4efdc6a5615771c7f65e854cf3e8d",
    "signature": "0x1319a2474c11ed59cf78068a1a1a548a21490f6af9e5adf2a0253d34ad5a3dd91896c340197d46e2becf864c3ea053bf5feca2b203ba10807b31fc593955e3ce1c",
    "signer": "0x57B72EB07de2F234F10e779f1Ba99344cEa3B3A6",
    "userId": "873528115"
  }
}