{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf75c7824816e9b644913ef3438246e550a6ca48577996783b0754fbfe43116d2",
    "signature": "0x5d0ed864a51fb9d2e569543969f979aaa2a09a149243157f211cf9476128d0ed1e0118bbd06651fbcc41f5d668e82d28516b06d6c0389855aed95d72320dcb4a1c",
    "signer": "0x8443DF0e780e13a6135f5925b37C1DbeAdf1053E",
    "userId": "256042689"
  }
}