{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "230445",
    "entityType": "User",
    "nonce": "0xf44ec438635844ff22bb1839407323e2f612e7396ce794867fdb969b6385c339",
    "signature": "0x4b8ace4d36727faa053ce3eaf2bce0df5107d62b70006b7bfa6a2d50567e08397a54aa26836f4a62e27ebfd66b9831379b459abe0443aef22febaba885e412051b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}