{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "845937215",
    "entityType": "User",
    "nonce": "0x90b4ff80424b87bc2ca47da489a19d2f2d70240b7bebc45fd1431bc34d648f5b",
    "signature": "0xe57e420ea780c3dd8dd1c5fa54ed477cf489997efd555dfa92198ead1b3ce5ed5997f0c32c01ee5f1f7d54691d617d6daf49211466936f4d045ee555d6b860ec1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}