{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0xa1eab0d0c8ed7a68d36013f899b25a079137fc4964aa0e010cedfd46deb42ff0",
    "signature": "0xa0731089cc552610ef5807f93c902b8ebb6378859ac64258643a97e96212827c429fd080c52659ac108266339e6f29530379bab78b1fbffb0a08f9a7e721f1021b",
    "signer": "0xDDCce44d487ED1f7297d836241df35AAB6D867b0",
    "userId": "22610281"
  }
}