{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520958130",
    "entityType": "User",
    "nonce": "0x3436ff09c183411898c1d90fd3cf6bf2c1d70aa818c03ca6747fd7c086ae4087",
    "signature": "0xa0760d7dcb3f1163903f1f12fcdaa0a15ca04bf20753b151dc1dd3275cf9e94b00b550e318b93171e33fd52e97d496f9ba7130b698324a608d1d39a862de055f1c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}