{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfde7161f6ea454b135e628c62b40a3bcddb35206dab3e5bd256a6d7e4bb6728c",
    "signature": "0x92094511d47403decb7f1aeb11b0bcdfcd8f8729691dba0caea9aecfe2f941222776f10ffed56a6429dd5790cd2ce421de6374bcd785278ecd3396526e7794eb1c",
    "signer": "0x8A17A6d48FBE1BB8C240a485CfcF2ff03092f13c",
    "userId": "387010651"
  }
}