{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6c9e76d7fcfd40d6f6ab997dfd0f11cfe8791323636a76b5d8942ce99236aeed",
    "signature": "0x0c7194d70b87283d26cc0c2d4739f0e5b938e5421de6b50841d950245c4b5c8f164eaca81e4ed31763ea269bdbaacdccf9bffb3f5110f889b74bb3c1bb2bd7a61b",
    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}