{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1646345",
    "entityType": "User",
    "nonce": "0x670b13c276cbec78e6e85c2a9ac2663579259386630e39e47a09b724a8a2e323",
    "signature": "0x22b35f85ac5f35e912df7d7df646727953bac7ce2f9d4de5229ab48652eaa2721ea97d270d1d3910d857ffb40c70c24e6790b66a703aa41eb17abf61052d0e9b1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}