{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4e9d4d953d168a3a68aa412676f5689d8c7448fc0a71920536352b3eec21d8e2",
    "signature": "0xfe28781d6d60bb2b2a6711cf3c553ed336e38c4f4e35c2590cab24c7718242da437d6c1d80e32ecee664316e7274894a4b9ec0999a00e61e92e64a93c9656ffb1b",
    "signer": "0x3F376de7e39D49125bfD9C68b2379c67fA79a9Aa",
    "userId": "869058817"
  }
}