{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234141",
    "entityType": "User",
    "nonce": "0x4d354a6666d62538877f4e9aa65518246efa6f55f0d730350a70a93e2d3ae486",
    "signature": "0xe29db22b24dfe91ca3443a3ed37143a63835755ff91416106893478ca89c8d2f6f39c03a17cfeed0ca85dbc4c2cf687190fe873e37c35e7d2d236d27534d2b621c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}