{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313221",
    "entityType": "User",
    "nonce": "0x329069bc4eca62becfb64e8c42f8b88fae73e6adba05627a4f29c5a8cdf5bd65",
    "signature": "0x1b777c796a5811552c2094a7d7512287cb39b7f73565e802792e630263f36f3459befb435bf00ff917f57d999c31f291af61ea8f43ecde81fe65a95affd6f2c21b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}