{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "984442370",
    "entityType": "User",
    "nonce": "0x64329b4df6b83fe8c347d70416a083ef17233139e25096e7932f00cf44a51187",
    "signature": "0x8ef5b20c627a52326952b7330dd3beb9f504819c7502a9bf1b41cfe2741f3e70023ccb9335dcba43fdee610ef26e42f090715549e41342fdc97ef02619ba9cbf1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}