{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54545",
    "entityType": "User",
    "nonce": "0x6d333822a7734f2bf8e72cc386b94e87abcc8d8f32c92702ad13caeb805ca339",
    "signature": "0x04fe74b49dd723d0e696d7bb2864d057b865444475a5ffe78872e281eb1b9bbf6930ad1f80e3485c77488e394e6369932aeb2aa17e471ea4f8799049f65c39331b",
    "signer": "0xE9B9EEdDb579478834256Bd35E42d09cfb754b1d",
    "userId": "281227"
  }
}