{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "582447217",
    "entityType": "User",
    "nonce": "0x6e20900a929a6eea9d7e936abe693488ab7047c204c5055a5bf669ed0f30f84e",
    "signature": "0xa0a9d0a44c161b090780d6748070e2f7cf292eddc3e8c6589db49e54e81aa6e02f04af85cea623fdbcc7ee051aaeb17c041e2f4951a74d1e942a8b1a9f5bc5001b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}