{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "992818316",
    "entityType": "User",
    "nonce": "0xd100ad9d00bdf085aa83c5c91875236548dc785c26025341a3d305e4cc2294d4",
    "signature": "0x1f6e0a6aa60d0f8cb7ca4ad4b2eb490fb5da983976be858187a1644b9071d3e4376836ab4cf7c80239552fbfa9abdd8b932146b0a1d2cc81b8fc64f8b1cf85ea1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}