{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843421708",
    "entityType": "User",
    "nonce": "0x674c41331fcbd5ee6abad6119d045b6120c6adbc2a523a13b47b7cd0ca1ccf00",
    "signature": "0x9fb81d54bcd92bf536b1720a5557fdb767986f5c2134028d730db3d929b3f0937d66a442d77d041aa68d60fe2442264c219fe9cf027793c49623b22626d9df4d1c",
    "signer": "0xb10C19C3B0cAC7fCec2A27C480820d724C82840d",
    "userId": "341801"
  }
}