{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "350504932",
    "entityType": "User",
    "nonce": "0xb97eb7a6f1529a58f28521dfe4023bb4ec64c62ff0ddf47c16c6429d5eb39b1e",
    "signature": "0x81b430617b020e379eb53f995975961c1057058d8bba2d5498291569b73f637940fb01f72e512cd22b6e2fbdaa4836d777f3f20576967b82fd7025c1fb87080a1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}