{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753616",
    "entityType": "User",
    "nonce": "0xaa59736a2608cdd419d86a77ab741fba39a79ef6b76b3318801f5412251e9127",
    "signature": "0xad40ca4065831d0f4488bf947e7457ef4aea42b79ec32da6c0832ffe2eac9ad0497dad1231a5c22feeb8a067f5536d9fffbbb64e753e54cd6aae01d21c083ca31b",
    "signer": "0x8179f47FB821305795B1c3104622239E9D22ec31",
    "userId": "851281403"
  }
}