{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "65237",
    "entityType": "User",
    "nonce": "0x06cc193f96fe3bcbb6af50765ff16dcf543d6dc17c7a9eb0c139a4417122670e",
    "signature": "0x5229e4645fa64deb6d0443c041f2253cd2b6ee74cd488d0ec1acb5d94385f16c2879317c634fd160a20f4446b59fee9bafdcd9e88508b99798148294359dea711b",
    "signer": "0xb8Bf68e2681FA1A8a8ce9c78070BF9644e947378",
    "userId": "12890"
  }
}