{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x35b99c8f62a4b57987a4d8fcf021a1caf6e35fbf8efd9d12a9acb3aa8048e35d",
    "signature": "0xa5689f71ff8c71381d9075cee16c51d2306044fad836e89c561b68ad308e6bde094d4ed3fc13fdf3485dd68d4116e1f2ef745b674c4795d9370a82d86ba052971c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}