{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0xc7b593ae759bb7265914af54c31b5bc02bdefc73949d3984681f66e3d93c53ad",
    "signature": "0x7048576f62fcb48819695461245e3b4ceeaaacd67912a4c433a19f38bd125e36349968fc2d9b334187676b3e31ba7029794fef3c4a901d9f14ad1f26eeabda471b",
    "signer": "0x1Aa01c3B92ac91B734FD825c16CDfb6a745B1cE7",
    "userId": "217574494"
  }
}