{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "464258",
    "entityType": "User",
    "nonce": "0x5e8ea59c45c6a8ef6f3e432ca515cacd78e12df22f2978d1365c223508e8cfb3",
    "signature": "0x0f8f2ddf05e3529e3df272667f30faddb2ce61937740f18e3b0d51c1255d3dd274c6dc6727ebcfc89c3ede30b53aa8ceebbfa69734dd9dc000f85ac5cd28e2961c",
    "signer": "0x7D273271690538cF855E5b3002A0dD8c154bB060",
    "userId": "1"
  }
}