{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xbb30a5b4253ca8e4f8cbd7646e71f054c70e0005fd705cc28cc193d705d6bdcf",
    "signature": "0xa68bb83f545a8bd563195bf7ece4e9bd55e34f8c86a7d77d897f037a8483ab352fb56a74f0912d2156c59b4663ca5459ae97d9df30b8e5655f09f4a5bd26933c1c",
    "signer": "0x4d6701aee41cF386F0f1Dc360F47F200983c6c62",
    "userId": "454478631"
  }
}