{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcd660a72560b02e28d88fcd062a4e2c6f9363c687a43944ef326711f3864d99a",
    "signature": "0xb02564f2232e507a9d9faed3c5cb6426bcbc09e9990e6aaa5a558e8f5970cd3039e763c52a4ff62b817c3f9c13232078376669ed83f44da7597406e590a16b801c",
    "signer": "0x44f05aF7A6aB16944cA066aC4A1Cced897279fb6",
    "userId": "256987263"
  }
}