{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x108de84838a3b7c8904abe6c6f263d22c7fe3a7e61ac321d7dffe7607a9c20d3",
    "signature": "0xe9a2bf9b460f564cf6bfe6d1422d9e74e97e7f014930607518d271b9dfb5c96976ffdb64adffd6276c5ee42c943e0a543321a342e217545a87f280c830a1090f1c",
    "signer": "0xAd948EEedA4AB2d06bF3150Daf2D25De733e7Cd5",
    "userId": "175201368"
  }
}