{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "444243476",
    "entityType": "User",
    "nonce": "0xdfc3703c1cd222a4cf20a8e3caeaa378529838aa5e606c9e8495f4e4579e46de",
    "signature": "0x4cadc31b9ccaba6be84ae16c1c454465898ddc74a9d6a566ee5fb52d19246b826f637d9baed7a8cf7fb2830a9adc17d3bb850785f14466dd6a1ba8dd5369f9321b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}