{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54225",
    "entityType": "User",
    "nonce": "0x1462a6bc03d9ece87b98136f750ca3daffdf941a2af8809d1b39943c484d0cdd",
    "signature": "0x54f3ac9cd012a64e026c5516b0cc683522146e9d9472b9ea07cd3f1318a81471579cb46379ec7ed446001bec44d2bbb53f4467ddf6c982189a3586d0d75bb1df1c",
    "signer": "0x5aeCC1AFF37a5BA2FEE40cF4dd6357A86DE23D42",
    "userId": "950958674"
  }
}