{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "995293503",
    "entityType": "User",
    "nonce": "0x304b03d8891656a2f659e1984d7ab5cc149b8b96f814d471ed21b2310a7c202a",
    "signature": "0xda74443f65627b40a6e5a70cc4a043fb6625655ea8fff1d0175d963f4b72cf3e33e19753ef1db5bf6351a3f489994b5658149b75621eb09cc742a50a93550fca1c",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}