{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "898121894",
    "entityType": "User",
    "nonce": "0x64e3e345a648e00734d4a4984afbdf732079d83af76c7721b1527e4eee223453",
    "signature": "0x999632d2a8c9e3ae2e3c95d2f60160b5ad8726011fbd8c8b1068b854c2932a9c67ac8a1a4566a8aabf3b79c5099f4072ad323c4bbd3613d0bbfdcc2c640d76a61c",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}