{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "847467862",
    "entityType": "User",
    "nonce": "0xf5064c9cf2be5d81d943c3b66e684ac3267436ee2a8c354a5be6987885823128",
    "signature": "0x3522d6fbc6889d4ec5a43e1d30f9bfc67d3e1e7d8ddf649a0345bed7f5afd29165f775b0db77fa7df8b8b7282bf88c016162ee2b381abf5c353f2a5ff54fe1831b",
    "signer": "0xbA83b3D0645C0C99c76cB296B0BA81bD641DB81c",
    "userId": "951995708"
  }
}