{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943606732",
    "entityType": "User",
    "nonce": "0x57f4ea0562839b894b42b53372c765a1b0228c7de5a625d8ecaec5456b08c50a",
    "signature": "0xf168474b17029fca2bfe6e319dfb07f28b02a632b4d44f2f357e3b6505ff0af27f0489d3a9bad20ee51484ff448d69d3128b43cb3401a9c675f0c8a1355fd4db1c",
    "signer": "0x4a4E686a6442e2Fc2495a7d4363B25c583Ea3c3a",
    "userId": "34815"
  }
}