{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0xb4a405060b2822dea9286f9f67afd09de0b075df2e7d5330a1f901a5d00e39df",
    "signature": "0xd9a7b4102f83499a9142f76a65ae19705006592e2527adfea7a3923a0054f3cb28983db61d9e9c0cf89858a77ae9da8aa2a362a829215ca25127720d9a2b19fc1b",
    "signer": "0x5C13CD392EcB86FaceF8A07FC5B300833E86cD23",
    "userId": "167249"
  }
}