{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1640466",
    "entityType": "User",
    "nonce": "0xdcc9497f00c789e3c2d7ca6aec179a3d68643e449530081f885ff16c4d239637",
    "signature": "0x823315fa0286b4e265caf4fdc858af99a225b9bd6da76cb27826d6cfdf862eda5b55ffb9303e75d59bbfcc73c0e7c871adde059dfed732bb520b31bfb81471351c",
    "signer": "0xcdc1772589e70ee6667FAaC93E3F0CcD5BFDa2aE",
    "userId": "354908"
  }
}