{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf8d9afbe3a6f25af83f36e64d7a5a3ef539099d30a46e18708999066dc026c87",
    "signature": "0x47fa157d56c166ee58ce342c6ea15e87818405632c62b3ab0891f1a8195f26c86e89e49e473a727ea2e92ab8ef2990dd85fc035c908118af77eae0ad158c79661b",
    "signer": "0x607AeF2459C103098d065C1481039f628E9756B4",
    "userId": "717929531"
  }
}